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David Kahn Inc

David Kahn

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US3056194A	Method of assembling a follower film in the cartridge of a …	Expired / Lapsed	1955-12-23	1962-10-02	0	Details
US3008453A	Writing instruments	Expired / Lapsed	1958-04-03	1961-11-14	0	Details
US2972781A	Method of deforming plastic articles	Expired / Lapsed	1957-11-05	1961-02-28	0	Details
US2249004A	Method of and apparatus for treating thermoplastic tubes	Expired / Lapsed	1935-10-31	1941-07-15	0	Details