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United States Utility Patents
4,939,490 - 4,939,499
Previous 10 Next 10
| Number | | Title |
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4,939,490 |
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Molded case circuit breaker bell alarm unit |
|
4,939,491 |
|
Combination barrier and auxiliary CT board |
|
4,939,492 |
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Electromagnetic trip device with tripping threshold adjustment |
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4,939,493 |
|
Magnetic field generator |
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4,939,494 |
|
Surface-mounted-type inductance element |
|
4,939,495 |
|
Circuit breaker with auxiliary status indicating switch |
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4,939,496 |
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Regulatable creep strain gauges and process for obtaining such gauges |
|
4,939,497 |
|
Pressure sensor |
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4,939,498 |
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PTC thermistor device with PTC thermistor unit housed in case |
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4,939,499 |
|
Magnetic pole detecting Hall element |
For U.S. patent law, rules, and procedures see MPEP.
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