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Patent applications and USPTO patent grants for Johnston; John G.The latest application filed is for "communications system with direct access mailbox".
Patent | Date |
---|---|
Communications system with direct access mailbox Grant 7,756,258 - Clift , et al. July 13, 2 | 2010-07-13 |
Communications system with direct access mailbox App 20070168428 - Clift; David J. ;   et al. | 2007-07-19 |
Switching in a telecommunications service node Grant 5,610,912 - Johnston March 11, 1 | 1997-03-11 |
Air pressure gauge tool Grant 4,694,691 - Johnston September 22, 1 | 1987-09-22 |
Solar heater Grant 3,875,925 - Johnston April 8, 1 | 1975-04-08 |
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