David Kahn Inc

David Kahn

Active Patents

Total Holdings

Patent Holdings

Patent No.	Title	Status	Filing Date	Grant Date	Actions
US3008453A	Writing instruments	Expired / Lapsed	1958-04-03	1961-11-14	Details
US2972781A	Method of deforming plastic articles	Expired / Lapsed	1957-11-05	1961-02-28	Details
US2249004A	Method of and apparatus for treating thermoplastic tubes	Expired / Lapsed	1935-10-31	1941-07-15	Details