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Handheld tester for starting/charging systems
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Electronic battery tester with normal/cold test modes and terminal connection detection
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Battery tester using internal resistance to measure a condition of a battery
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Voice transmission adaptor assembly
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Method and apparatus for testing vehicle engine sensors
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Method and apparatus using a pair of test circuits having LED indicators for testing engine sensors and ignition modules in vehicles
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Voice transmission system
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Switch for electronic device
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Voice transmission system
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Face mask apparatus
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Distributorless ignition adapter for diagnostic oscilloscopes
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Variable sensitivity timing analyzer
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Multiple position rotary switch
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Voice transmission system
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