Assignee

TAKEDA SHIGEKAZU

2 granted patents·57 citations·filing 1980–1983

Technology mixG06K2 B32B1 B42D1 G07C1 G08B1

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2 records

0166US4356391AMagnetic cards and method of manufacturing the sameTAKEDA SHIGEKAZU·Filed 1980·Granted Oct 26, 1982·23 cites·8 claims
0258US4605845ADetectable card and entry and departure checking apparatus utilizing the sameTAKEDA SHIGEKAZU·Filed 1983·Granted Aug 12, 1986·34 cites·8 claims

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