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National Screw and Manufacturing Co

National S

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US3307444A	Blind fastener	Expired / Lapsed	1965-06-21	1967-03-07	2	Details
CA633370A	Fastener	Expired / Lapsed	—	1961-12-26	0	Details
US2833325A	Countersunk flexible head threaded fastener	Expired / Lapsed	1954-02-09	1958-05-06	0	Details
US2676510A	Screw driver slot with driver wedging means	Expired / Lapsed	1950-09-23	1954-04-27	0	Details