Extract from the Register of European Patents

EP Citations: EP0148470

Cited inSearch
Type:Patent literature
Publication No.:EP0070574  [AD]
 (HITACHI LTD [JP]);
Type:Patent literature
Publication No.:US4391697  [A]
 (MORRISON JR CHARLES F)
Cited inExamination
Type:Patent literature
Publication No.:US4265729  
Type:Patent literature
Publication No.:EP0081176