Extract from the Register of European Patents

EP Citations: EP0080812

Cited inSearch
Type:Patent literature
Publication No.:GB2018080  [Y]
 (HITACHI LTD);
Type:Patent literature
Publication No.:US4173915  [Y]
 (GROSS GLENN M [US]);
Type:Patent literature
Publication No.:EP0017341  [Y]
 (WILLIAMS ELECTRONICS INC [US])