;  WO2008031096-A2 -- US2465407-A   ;  US4460834-A   POWER GROUP INT CORP (POWE-Non-standard)   GOTTFRIED C F;  US5305714-A   NIPPON SOKEN KK (NSOK);  TOYOTA JIDOSHA KK (TOYT)   YAMADA,  IMATAKE N,  KITO O,  MURATE N,  KANEHARA K,  SEKIGUCHI K,  IGASHIRA T;  US5771693-A   NAT POWER PLC (NAPO-Non-standard)   CONEY M;  US20020043895-A1   ;  US7081699-B2   PENN STATE RES FOUND (PSRF)   KEOLIAN R M,  BASTYR K J;  WO2008031096-A3 -- US2465407-A   ;  US4460834-A   POWER GROUP INT CORP (POWE-Non-standard)   GOTTFRIED C F;  US5305714-A   NIPPON SOKEN KK (NSOK);  TOYOTA JIDOSHA KK (TOYT)   YAMADA,  IMATAKE N,  KITO O,  MURATE N,  KANEHARA K,  SEKIGUCHI K,  IGASHIRA T;  US5771693-A   NAT POWER PLC (NAPO-Non-standard)   CONEY M;  US20020043895-A1   ;  US7081699-B2   PENN STATE RES FOUND (PSRF)   KEOLIAN R M,  BASTYR K J;  US7439630-B2 -- US633829-A   ;  US1974483-A   ;  US4460834-A   POWER GROUP INT CORP (POWE-Non-standard)   GOTTFRIED C F;  US4754805-A   ROTHMEYER M (ROTH-Individual)   ROTHMEYER M;  US4928496-A   ;  US4943750-A   ;  US5046319-A   CALIFORNIA INST OF TECHN (CALY)   JONES J A;  US5165243-A   US DEPT ENERGY (USAT)   BENNETT G A;  US5497630-A   ;  US5705902-A   UNIV CALIFORNIA (REGC)   POST R F,  MERRITT B T,  DREIFUERST G R;  US5771693-A   NAT POWER PLC (NAPO-Non-standard)   CONEY M;  US20020017380-A1   ;  US20050082949-A1   ;  US6353276-B1   GENDRON D (GEND-Individual)   GENDRON D;  US6396186-B1   ;  US6425440-B1   BORST INC (BORS-Non-standard)   TSENTER B,  PETROV A;  US6866092-B1   MOLIVADAS S (MOLI-Individual)   MOLIVADAS S;  US6978611-B1   ;  US6899967-B2   JOHNSON L G (JOHN-Individual)   JOHNSON L G;  US7128270-B2   SILVERBROOK K (SILV-Individual);  LAPSTUN P (LAPS-Individual);  RUSMAN J (RUSM-Individual);  HENDERSON P C B (HEND-Individual);  MOINI A (MOIN-Individual);  YOURLO Z A (YOUR-Individual);  UNDERWOOD M J (UNDE-Individual);  RIDLEY N D (RIDL-Individual)   SILVERBROOK K,  LAPSTUN P,  RUSMAN J,  HENDERSON P C B,  MOINI A,  YOURLO Z A,  UNDERWOOD M J,  RIDLEY N D;  US30840-E   TERRY L E (TERR-Individual);  MPD TECH CORP (MPDT-Non-standard)   TERRY L E;  EP2076665-A2 -- US20020043895-A1   ;  WO2001063738-A2   ;  CN101553651-B -- JP2002206819-A   ;  US2465407-A   ;  US4460834-A   POWER GROUP INT CORP (POWE-Non-standard)   GOTTFRIED C F;  US5305714-A   NIPPON SOKEN KK (NSOK);  TOYOTA JIDOSHA KK (TOYT)   YAMADA,  IMATAKE N,  KITO O,  MURATE N,  KANEHARA K,  SEKIGUCHI K,  IGASHIRA T;  US5771693-A   NAT POWER PLC (NAPO-Non-standard)   CONEY M;  US20020043895-A1   ;  US7081699-B2   PENN STATE RES FOUND (PSRF)   KEOLIAN R M,  BASTYR K J