Extract from the Register of European Patents

EP Citations: EP0091430

Cited inInternational search
Type:Patent literature
Publication No.:SE152024  [A]
 ;
Type:Patent literature
Publication No.:US1954017  [A]
 (LEVI MANNING WILLIS);
Type:Patent literature
Publication No.:US2480441  [A]
 (BINGHAM LOREN J);
Type:Patent literature
Publication No.:US2960924  [A]
 (GROTT FRANK S)