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US3362286A
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Automatic bowling score projector
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US3389634A
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Apparatus for projecting printed bowling game scores
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US3245685A
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Pinfall detecting apparatus with rectangular switch actuating means
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US3299775A
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Apparatus for producing a permanent record of bowling game scores entered on a visual scoreboard
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US3295439A
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Printing apparatus
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US3272123A
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Method of printing bowling game scores
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US3300213A
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Pinfall detecting apparatus with shift register storage means
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US3289574A
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Settable type wheel printing apparatus for a bowling game
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US3263997A
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Automatic pinfall detecting apparatus for bowling game
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US3309085A
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Collapsible rail section for directing bowling ball into storage pocket
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US3295438A
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Printing apparatus
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US3224768A
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Apparatus for use in detecting pinfall in a bowling game
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US3224767A
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Automatic pinfall detecting apparatus for bowling game
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US3189349A
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Bowling alley pin-spotter control
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US3257898A
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Bowling score projector
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US3185477A
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Band drive for standing pin detector
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US3248111A
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Horizontally movable pin detecting member with synchronous switching system for indicating standing pins
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US3121565A
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Bowling pin having a magnetic element mounted in an axial bore therein
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US3091458A
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Bowling game apparatus
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US3158371A
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Apparatus including a reciprocable pin sensing member for use in detecting pinfall ina bowling game
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