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United States Utility Patents
4,910,480 - 4,910,489

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NumberTitle
4,910,480 Hierarchical current amplifier
4,910,481 Branching filter
4,910,482 AC line filter
4,910,483 Acoustic surface wave filter device with asymmetric transducers and method of manufacturing same
4,910,484 Electromagnetic relay having silencing effect
4,910,485 Multiple circuit breaker with double break rotary contact
4,910,486 Electromagnetic drive actuator
4,910,487 Bistable magnet
4,910,488 Rotary variable differential transformer with eccentric rotor core
4,910,489 Gas tube fail-safe device for telephone protector modules



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