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 DE19822697-C1   ;  EP398111-A   ASEA BROWN BOVERI A (ALLM)   BOSSEL U;  EP817298-A1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   KURANAKA S,  GAMOU T,  MORITA Y,  HATOH K;  EP1501146-A2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   TAKEBE Y,  TERANISHI M,  NAKAGAWA T,  UCHIDA M,  SEGAWA T;  EP977294-B1   SULZER HEXIS AG (SULZ)   SCHULER A;  JP05047408-A   ;  JP60235365-A   ;  JP62115673-A   ;  JP2005044727-A   ;  JP2006032290-A   ;  JP2006221854-A   TOYOTA JIDOSHA KK (TOYT)   NAGAOSA H;  US3453087-A   ;  US3453146-A   ;  US3488266-A   CONTINENTAL OIL CO (CONO);  US3527565-A   LUMMUS CO (LUMM);  US3531263-A   UTD AIRCRAFT CORP (UNAC);  US3607419-A   UNITED AIRCRAFT CORP (UNAC);  US3645701-A   LUMMUS CO (LUMM);  US3718506-A   ;  US3746658-A   SAES GETTERS SPA (SAES);  US3972731-A   UNITED TECHNOLOGIES CORP (UNAC)   BLOOMFIELD D P,  COHEN R;  US3973993-A   UNITED TECHNOLOGIES CORP (UNAC)   BLOOMFIELD D P,  LANDAU M B;  US3976506-A   UNITED TECHNOLOGIES CORP (UNAC);  US3982962-A   UNITED TECHNOLOGIES CORP (UNAC); 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