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US2940756A
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Multi-pivot bowling pin with switch
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US2994420A
|
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Cup guiding and positioning means
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US2852957A
|
|
Adjustable cam mechanism
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US2971361A
|
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Metering valve
|
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US2932374A
|
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Coin-chute anti-fraud means
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US3035617A
|
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Fuel transfer adapter with dual valve actuator
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US3010055A
|
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Solenoid plunger with localized bearing
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US2943512A
|
|
Switch ratchet structure
|
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US2881810A
|
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Metering pump for liquid gas fuel
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US2908180A
|
|
Gear mechanism
|
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US2895340A
|
|
Stepper with built-in latch
|
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US2864620A
|
|
Ball transfer and switch means
|
|
US3034790A
|
|
Selectively changeable score indicating and display means
|
|
US2853304A
|
|
Preview score control for ball games
|
|
US2932517A
|
|
Changeable score control and display mechanism
|
|
US2882057A
|
|
Selective multi-section ball shutter
|
|
US2855203A
|
|
Ball gate
|
|
US2945624A
|
|
Counting number register
|
|
US2853303A
|
|
Selective shutter mechanism for ball games
|
|
US2864619A
|
|
Ball game searching and scoring circuit
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