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Bankers Trust Co

Bankers Tr

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US4702633A	Multicolor writing implement	Expired / Lapsed	1980-09-23	1987-10-27	5	Details
US3411534A	Four-way valve	Expired / Lapsed	1966-12-28	1968-11-19	0	Details
US3307389A	Surgical instrument	Expired / Lapsed	1964-05-28	1967-03-07	2	Details
US1008392A	Electric switch mechanism.	Expired / Lapsed	1907-10-28	1911-11-14	0	Details