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Patent:US2714991


Patent:US 2714991
Title:Sign Control Mechanism for Duplex Registers
Date:09.08.1955
Place:
Country:USA
Person:Hopkins, G. W. (P)
Company:Monroe (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2714991 (espacenet),  US2714991 (uspto)


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