← Back to Companies

Monroe Calculating Machine Co

Monroe Cal

Active Patents

0

Total Holdings

4

Patent Holdings

Filter in Explorer →

Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2813259A	Magnetic tape recording systems	Expired / Lapsed	1954-04-12	1957-11-12	0	Details
US2739299A	Magnetic storage systems for computers and the like	Expired / Lapsed	1951-05-25	1956-03-20	0	Details
US2716230A	Keyboard checking alarm	Expired / Lapsed	1952-11-08	1955-08-23	0	Details
US2700755A	Keyboard checking circuit	Expired / Lapsed	1951-11-09	1955-01-25	0	Details