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Extract from the Register of European Patents

EP Citations: EP2239669

Cited inSearch
Type:Patent literature
Publication No.:GB1273640  [I]
 (CRYOGENIC TECHNOLOGY INC [US]) [I] 1-4 * the whole document *;
Type:Patent literature
Publication No.:US4333356  [I]
 (BARTELS HERMANN, et al) [I] 1-4 * abstract * * column 2, line 11 - line 68 *;
Type:Patent literature
Publication No.:JPS5870079  [I]
 (PILOT PEN CO LTD) [I] 1-4 * abstract *