Extract from the Register of European Patents

EP Citations: EP0561485

Cited inSearch
Type:Patent literature
Publication No.:US3268687  [A]
 (HENRY WAGHORNE JOHN, et al);
Type:Patent literature
Publication No.:US3665249  [A]
 (ZAJIC VLADISLAV);
Type:Patent literature
Publication No.:DE3642383  [A]
 (SIEMENS AG [DE])