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Friden Calculating Machine Co Inc

Friden Cal

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2728521A	Apparatus for typing symbols from a register	Expired / Lapsed	1952-04-11	1955-12-27	0	Details
US2652527A	Overload relief for electric motors	Expired / Lapsed	1950-01-13	1953-09-15	0	Details
US2608346A	Ten key differential entry mechanism	Expired / Lapsed	1946-06-14	1952-08-26	0	Details
US2311354A	Calculating machine	Expired / Lapsed	1939-01-16	1943-02-16	0	Details
US2279455A	Calculating machine	Expired / Lapsed	1937-06-02	1942-04-14	0	Details