;  EP237828-A2 -- EP109543-A   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI AG (ALLM)   REISS H,  ZIEGENBEIN B;  EP109543-B   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI AG (ALLM)   REISS H,  ZIEGENBEIN B;  EP144747-A   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI A (ALLM)   JESSEN J C,  HASENAUER D;  EP144747-B   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI A (ALLM)   JESSEN J C,  HASENAUER D;  FR1061240-A   ;  JP59091658-A   JAPAN STORAGE BATTERY CO LTD (NIST)   IWAI K;  JP61110973-A   YUASA BATTERY CO LTD (YUAS);  US3823037-A   US ATOMIC ENERGY COMMISSION (USAT);  FR2595009-A1 -- EP109543-B   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI AG (ALLM)   REISS H,  ZIEGENBEIN B;  EP144747-B   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI A (ALLM)   JESSEN J C,  HASENAUER D;  FR1061240-A   ;  JP59091658-A   JAPAN STORAGE BATTERY CO LTD (NIST)   IWAI K;  US3823037-A   US ATOMIC ENERGY COMMISSION (USAT);  EP237828-A -- EP109543-A   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI AG (ALLM)   REISS H,  ZIEGENBEIN B;  EP144747-A   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI A (ALLM)   JESSEN J C,  HASENAUER D;  FR1061240-A   ;  JP59091658   JAPAN STORAGE BATTERY CO LTD (NIST)   IWAI K;  JP61110973   YUASA BATTERY CO LTD (YUAS);  US3823037-A   US ATOMIC ENERGY COMMISSION (USAT);  FR2595009-A -- EP109543-A   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI AG (ALLM)   REISS H,  ZIEGENBEIN B;  EP144747-A   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI A (ALLM)   JESSEN J C,  HASENAUER D;  FR1061240-A   ;  JP59091658-A   JAPAN STORAGE BATTERY CO LTD (NIST)   IWAI K;  US3823037-A   US ATOMIC ENERGY COMMISSION (USAT);  EP237828-B -- EP109543-A   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI AG (ALLM)   REISS H,  ZIEGENBEIN B;  EP144747-A   BBC BROWN BOVERI & CIE AG (BROV);  ASEA BROWN BOVERI A (ALLM)   JESSEN J C,  HASENAUER D;  FR1061240-A   ;  JP59091658   JAPAN STORAGE BATTERY CO LTD (NIST)   IWAI K;  JP61110973   YUASA BATTERY CO LTD (YUAS);  US3823037-A   US ATOMIC ENERGY COMMISSION (USAT)