;  US7098802-B2 -- EP399987-A   WELLHAUSEN H (WELL-Individual);  SMET-HOLE NV (SMET-Non-standard);  EASTMAN CHRISTENSEN CO (EAST-Non-standard)   WELLHAUSEN H;  US749633-A   ;  US2178931-A   ;  US2197392-A   ;  US2249769-A   ;  US2301783-A   ;  US2354887-A   ;  US2379800-A   ;  US2414719-A   ;  US2531120-A   ;  US2633414-A   ;  US2659773-A   ;  US2662123-A   ;  US2748358-A   ;  US2974303-A   ;  US2982360-A   ;  US3079549-A   ;  US3090031-A   ;  US3170137-A   ;  US3186222-A   ;  US3194886-A   ;  US3209323-A   ;  US3227973-A   ;  US3253245-A   ;  US3518608-A   SHELL OIL CO (SHEL);  US3696332-A   SHELL OIL CO (SHEL);  US3793632-A   ;  US3807502-A   ESSO PRODN RES CO (ESSO);  US3879097-A   CONTINENTAL OIL CO (CONO)   OERTLE D H;  US3930220-A   SUN OIL CO PENNSYLVANIA (SUNO)   SHAWHAN E N;  US3957118-A   EXXON PRODN RES CO (ESSO);  US3989330-A   CULLEN R H (CULL-Individual);  GENERAL ELECTRIC CO (GENE)   CULLEN R H,  YOUNG D E;  US4012092-A   GODBEY J J (GODB-Individual)   GODBEY J J;  US4057781-A   SCHERBATSKOY S A (SCHE-Individual)   SCHERBATSKOY S A;  US4087781-A   RAYTHEON CO (RAYT)   GROSSI M D,  CROSS R K;  US4095865-A   SHELL INT RES MIJ BV (SHEL)   DENISON E B,  DICKSON L L,  MARSH G L;  US4121193-A   SHELL OIL CO (SHEL)   DENISON E B;  US4126848-A   SHELL INT RES MIJ BV (SHEL)   DENISON E B;  US4215426-A   KLATT F (KLAT-Individual)   KLATT F;  US4220381-A   SHELL INT RES MIJ BV (SHEL)   VANDERGRAA G C;  US4348672-A   TELE-DRILL INC (TELE-Non-standard)   GIVLER G C;  US4445734-A   HUGHES TOOL CO (HUGH)   CUNNINGHAM R A;  US4496203-A   COAL IND PATENTS LTD (COAL)   MEADOWS A;  US4537457-A   EXXON PRODN RES CO (ESSO)   DAVIS A P,  ROBINSON L H;  US4578675-A   MACLEOD LABS INC (MACL-Non-standard)   MACLEOD N C;  US4605268-A   NL IND INC (NATL)   MEADOR R A;  US4660910-A   SCHLUMBERGER TECHNOLOGY CORP (SLMB)   SHARP S O,  DIEKEN J M;  US4683944-A   INNOTECH ENERGY CORP (INNE);  PANGAEA ENTERPRISES INC (PANG-Non-standard)   CURLETT J B;  US4698631-A   HUGHES TOOL CO (HUGH)   KELLY J L,  HOWARD M A,  NYSEN P A,  HACKING C A;  US4722402-A   WELDON J M (WELD-Individual)   WELDON J M;  US4785247-A   NL IND INC (NATL)   MEADOR R A,  THOMPSON L W,  GRAYSON W E;  US4788544-A   HUGHES TOOL CO (HUGH)   HOWARD M A;  US4806928-A   SCHLUMBERGER TECHNOLOGY CORP (SLMB)   VENERUSO A;  US4884071-A   HUGHES TOOL CO (HUGH)   HOWARD M A;  US4901069-A   SCHLUMBERGER TECHNOLOGY CORP (SLMB)   VENERUSO A F;  US4914433-A   HUGHES TOOL CO (HUGH)   GALLE E M;  US4924949-A   PANGAEA ENT INC (PANG-Non-standard)   CURLETT H B;  US5008664-A   QUANTUM SOLUTIONS (QUAN-Non-standard)   MORE H S,  FRASER E C,  BULDEC L R;  US5050675-A   ;  US5052941-A   SCHLUMBERGER LTD (SLMB)   HERNANDEZM R,  MULLER J P;  US5148408-A   TELECO OILFIELD SERVICES INC (TELE-Non-standard)   MATTHEWS H G;  US5248857-A   CIE GEN GEOPHYSIQUE (GEGE-Non-standard)   OLLIVIER Y R M;  US5278550-A   SCHLUMBERGER LTD (SLMB);  SERVICES PETROL SCHLUMBERGER (SLMB);  SCHLUMBERGER TECHNOLOGY BV (SLMB);  SCHLUMBERGER HOLDINGS LTD (SLMB)   RHEIN-KNUDSEN E,  FREDETTE M A;  US5302138-A   SHIELDS W E (SHIE-Individual)   SHIELDS W E;  US5311661-A   PACKLESS METAL HOSE INC (PACK-Non-standard)   ZIFFERER L R;  US5332049-A   BRUNSWICK CORP (BRUH)   TEW C;  US5334801-A   FRAMO DEV UK LTD (FRAM-Non-standard)   MOHN F;  US5371496-A   MINNESOTA MINING & MFG CO (MINN)   TANAMACHI S W;  US5454605-A   HYDRIL CO (HYDL)   MOTT K C;  US5455573-A   PANEX CORP (PANE-Non-standard)   DELATORRE L C;  US5505502-A   SHELL INT RES MIJ BV (SHEL)   SMITH J D,  FOX S A,  ASBILL W T;  US5517843-A   SHAW IND LTD (SHAW-Non-standard)   WINSHIP T E;  US5521592-A   SCHLUMBERGER LTD (SLMB)   VENERUSO A;  US5568448-A   MITSUBISHI ELECTRIC CORP (MITQ)   TANIGUCHI R,  HATTORI S,  SAKAMOTO T;  US5650983-A   ;  US5691712-A   SCHLUMBERGER LTD (SLMB)   MEEK D,  VAYNSHTEYN V;  US5743301-A   SHAW IND LTD (SHAW-Non-standard)   WINSHIP T E;  US5810401-A   FRANK'S CASING CREW & RENTAL TOOL (FRNK)   MOSING D E,  SIPOS D L;  US5833490-A   PES INC (PESP-Non-standard)   BOULDIN B W;  US5853199-A   GRANT PRIDECO INC (NAOV)   WILSON G E;  US5856710-A   GENERAL MOTORS CORP (GENK)   BAUGHMAN J S,  ROSS K C;  US5898408-A   ;  US5908212-A   GRANT PRIDECO INC (NAOV)   SMITH J E,  WINSHIP T E,  WILSON G E;  US5924499-A   HALLIBURTON ENERGY SERVICES INC (HALL)   BIRCHAK J R,  GARDNER C G,  YOO K;  US5942990-A   HALLIBURTON ENERGY SERVICES INC (HALL)   SMITH H C,  RINGGENBERG P D;  US5955966-A   ANADRILL INT SA (ANAD-Non-standard)   JEFFRYES B P,  JERVIS T T;  US5959547-A   BAKER HUGHES INC (BAKO)   TUBEL P,  HOLCOMBE M W;  US5971072-A   SCHLUMBERGER TECHNOLOGY CORP (SLMB)   HUBER K B,  LERCHE N C,  HROMAS J C;  US6030004-A   SHAW IND (SHAW-Non-standard)   SCHOCK W H,  CLARK R L,  ROSE M D,  HOWARD S P,  VOGELSANG J G;  US6041872-A   GAS RES INST (GASR-Non-standard)   HOLCOMB D J;  US6045165-A   SUMITOMO METAL IND LTD (SUMQ)   SUGINO M,  YAMAMOTO M;  US6046685-A   BAKER HUGHES INC (BAKO)   TUBEL P;  US6057784-A   ANADRILL INT SA (ANAD-Non-standard);  SERVICES PETROL SCHLUMBERGER (SLMB)   SCHAAF S,  SEYDOUX J,  THAIN W,  WERNIG M,  DOREL A;  US6104707-A   VIDEOCOM INC (VIDE-Non-standard)   ABRAHAM C;  US6108268-A   UNIV CALIFORNIA (REGC)   MOSS W C;  US6123561-A   APS TECHNOLOGY INC (APST-Non-standard)   TURNER W E,  BIGLIN D P,  SEPPA R;  US6141763-A   HEWLETT-PACKARD CO (HEWP)   SMITH M T,  MAGUIRE G G;  US20020135179-A1   ;  US20020193004-A1   ;  US20030070842-A1   ;  US20030213598-A1   ;  US20040027252-A1   ;  US20040075566-A1   ;  US6173334-B1   ;  US6177882-B1   HALLIBURTON ENERGY SERVICES INC (HALL)   RINGGENBERG P G,  SMITH H C;  US6188223-B1   SCI DRILLING INT (SCDR-Non-standard)   VAN STEENWYK D H,  TOWLE J N,  PRICE T;  US6192988-B1   BAKER HUGHES INC (BAKO)   TUBEL P;  US6196335-B1   DRESSER IND INC (DRES)   RODNEY P F;  US6209632-B1   MCALLISTER PETROLEUM SERVICES LTD (MCAL-Non-standard)   HOLBERT M L,  HASLETT J W,  SMALLWOOD R E,  TROFIMENKOFF F N;  US6223826-B1   DIGITAL CONTROL INC (DIGI-Non-standard)   CHAU A W,  MERCER J E;  US6367565-B1   HALL D R (HALL-Individual)   HALL D R;  US6392317-B1   HALL D R (HALL-Individual);  FOX J (FOXJ-Individual)   HALL D R,  FOX J;  US6670880-B1   NOVATEK ENG INC (NOVA-Non-standard)   HALL D R,  HALL H T,  PIXTON D,  DAHLGREN S,  FOX J;  US6405795-B2   MCALLISTER PETROLEUM SERVICES LTD (MCAL-Non-standard)   HOLBERT M L,  HASLETT J W,  SMALLWOOD R E,  TROFIMENKOFF F N;  US6641434-B2   BOYLE B W (BOYL-Individual);  MADHAVAN R (MADH-Individual);  JUNDT J (JUND-Individual)   BOYLE B W,  MADHAVAN R,  JUNDT J;  US6655464-B2   CHAU A W (CHAU-Individual);  MERCER J E (MERC-Individual)   CHAU A W,  MERCER J E;  US6717501-B2   HALL D R (HALL-Individual);  HALL H T (HALL-Individual);  PIXTON D (PIXT-Individual);  DAHLGREN S (DAHL-Individual);  FOX J (FOXJ-Individual)   HALL D R,  HALL H T,  PIXTON D,  DAHLGREN S,  FOX J;  US35790-E   BAROID TECHN INC (BARO-Non-standard)   COMEAU L E,  PUSTANYK R H,  WALLIS N P;  WO1988001096-A   ;  WO1990014497-A