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Monroe Systems for Business Inc

Monroe Sys

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US4333155A	Calculator having a modular keyboard	Expired / Lapsed	1979-05-18	1982-06-01	12	Details
US4323979A	Cartridge and bezel assembly for a calculator	Expired / Lapsed	1979-08-20	1982-04-06	13	Details
USD248595S	Portable calculating machine	Expired / Lapsed	1977-03-21	1978-07-18	1	Details
US4017725A	Solar powered portable calculator	Expired / Lapsed	1975-01-03	1977-04-12	10	Details
US3593313A	Calculator apparatus	Expired / Lapsed	1969-12-15	1971-07-13	30	Details