|
US3171253A
|
|
Combustion products engine
|
|
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|
|
Continuous external combustion engines
|
|
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|
|
Vaporizing oil burner
|
|
US2688230A
|
|
Continuous combustion engine
|
|
US2567022A
|
|
Air-blast circuit breaker
|
|
US2526387A
|
|
Air blast circuit breaker
|
|
US2557359A
|
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Shock-resistant condenser-type insulating bushing
|
|
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|
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Apparatus for converting heat energy into useful work
|
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|
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Engine
|
|
US2404395A
|
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Apparatus for converting heat energy into useful work
|
|
US2396742A
|
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Circuit breaker
|
|
US2260188A
|
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Gas-blast circuit breaker
|
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|
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Circuit breaker
|
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|
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Electric power cable
|
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Oil switch
|
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System for operating alternating current switchboard instruments
|
|
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Circuit breaker
|
|
US2089284A
|
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Pothead terminal
|
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GB412017A
|
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Improvements in electric cables
|
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GB415294A
|
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Improvements in electric cables
|
