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| Number | Title | Issue Date |
| 7411403 | Electrical switching apparatus and method employing active acoustic sensing to detect an electrical conductivity fault of a power circuit A circuit breaker detects a loose electrical connection condition of a power circuit. The circuit breaker includes first and second lugs, first and second acoustic couplers acoustically coupled to the power circuit, separable contacts electrically connected in serie... | 08/12/2008 |
| 6919505 | Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations An electronic apparatus, such as a meter, includes an enclosure having a first housing portion with an opening and a second front plate portion. Meter circuitry is mounted within the enclosure. The second front plate portion mates with the first housing portion with... | 07/19/2005 |
