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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 5519561 | Circuit breaker using bimetal of thermal-magnetic trip to sense current In a circuit breaker having a thermal-magnetic trip, the voltage across the bimetal is used to sense load currents. This voltage signal representative of current through the bimetal can be used as an input to an arcing fault detector. The signal is conver... | 05/21/1996 |
| 4947147 | High voltage trip mechanism for sign segments According to one aspect of the invention, it comprises a fireproof enclosure having a first and a second electrical terminal. The first electrical terminal is coupled to an electrical contact internal the fireproof enclosure. An actuating member is provid... | 08/07/1990 |
