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EP0140285
European procedure
Extract from the Register of European Patents
EP Citations: EP0140285
| Cited in | Search | Type: | Patent literature | Publication No.: | US3670281
[A] (RATTAN WILLIAM D); | Type: | Patent literature | Publication No.: | FR2314576
[A] (MATSUSHITA ELECTRIC WORKS LTD [JP]); | Type: | Patent literature | Publication No.: | DE2647203
[A] (SIEMENS AG); | Type: | Patent literature | Publication No.: | FR2377698
[A] (SIEMENS AG [DE]); | Type: | Patent literature | Publication No.: | EP0019183
[A] (TELEPHONIE IND COMMERCIALE [FR]) |