US6171218-B1 -- US3767195-A   ;  US4112928-A   ;  US4358105-A   LIFECYCLE INC (LIFE-Non-standard)   SWEENEY J S;  US4571682-A   COMPUTERIZED SPORTS EQUIPMENT (COMP-Non-standard);  SILVERMAN G (SILV-Individual)   SILVERMAN G,  BRUDNY J;  US4642769-A   UNIV WRIGHT STATE (UYWR-Non-standard)   PETROFSKY J S;  US4708337-A   IND TECHN RES INST (INTE-Non-standard)   SHYU J M;  US4828257-A   LIVINGWELL INC (LIVI-Non-standard);  POWERCISE INT CORP (POWE-Non-standard)   DYER R A,  BENTLEY A C,  KNAUER M J,  KEELOR R O,  RABENBERG B E;  US4842274-A   OOSTHUIZEN A D (OOST-Individual)   BUCZKOWSKA S A;  US4934694-A   MCINTOSH J L (MCIN-Individual)   MCINTOSH J L;  US5020795-A   SOMA DYNAMICS CORP (SOMA-Non-standard)   AIRY J F,  KADAVY T D;  US5067710-A   PROFORM FITNESS PRO (PROF-Non-standard)   WATTERSON S R,  BERSONNET G B,  DALEBOUT W,  BURK M;  US5213555-A   HOOD R L (HOOD-Individual)   HOOD R L,  ENGLEHARDT W H,  KRCH R W;  US5246411-A   RACKMAN M I (RACK-Individual)   RACKMAN M I,  MILSTEIN F;  US5361091-A   INTELETEXT SYST INC (INTE-Non-standard)   HOARTY W L,  LAUDER G M;  US5387164-A   LEAP INC (LEAP-Non-standard);  US5410472-A   ERGOMETRX CORP (ERGO-Non-standard)   ANDERSON S T;  US5462504-A   TRUE FITNESS TECHNOLOGY INC (TRUE-Non-standard)   TRULASKE F R,  SINGER P M;  US5512025-A   ICON HEALTH & FITNESS INC (ICON-Non-standard)   BREWER D P,  ROWLEY D R,  ROBERTSON L,  STANDING D J,  DALEBOUT W T,  WATTERSON S R;  US5547439-A   STAIRMASTER SPORTS MEDICAL PROD INC (STAI-Non-standard)   RAWLS R L,  WIERLO S J,  WADE C L;  US5553860-A   ZELIKOVICH R (ZELI-Individual)   ZELIKOVICH R;  US5591104-A   LIFE FITNESS (LIFE-Non-standard)   ANDRUS B D,  SIKES M,  ROBERTSON C D G,  ANNES R,  SLEMKO M J,  MADUZA A G,  NIETO A;  US5785630-A   TECTRIX FITNESS EQUIP INC (TECT-Non-standard)   BOBICK A F,  ULRICH W,  LEWIS J B,  SHEPARD E,  LEHMAN P;  US5810747-A   INTERACTIVE REMOTE SITE TECHNOLOGY INC (INTE-Non-standard)   BRUDNY J,  SILVERMAN G;  US6042519-A   SHEA M J (SHEA-Individual)   SHEA M J;  US6050924-A   SHEA M J (SHEA-Individual)   SHEA M J