US2112925A
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Card rack
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US2086715A
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Time controlled system
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US2098547A
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Time controlled system
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US2097623A
|
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Synchronizing system
|
US2097622A
|
|
Time controlled system
|
US2095829A
|
|
Time-controlled system
|
US2084098A
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Printing device
|
US2073449A
|
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Corrective time-controlled system
|
US2055080A
|
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Time-controlled corrective apparatus for dual secondary systems
|
US1937392A
|
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Timing and signaling device
|
US1908964A
|
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Clock mechanism
|
US1773152A
|
|
Secondary wall clock
|
US1773130A
|
|
Motor-control device
|
US1986392A
|
|
Corrective device for secondary clocks
|
US1767472A
|
|
Transmission device
|
US2037887A
|
|
Corrective device for secondary clocks
|
US1679534A
|
|
Corrective device for secondary clock mechanism
|
US1763252A
|
|
Clock-controlled contact device
|
US1623266A
|
|
Noiseless clock mechanism
|
US1616465A
|
|
Noiseless clock mechanism
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