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US2663059A
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Centrifugal mold and core
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US2523584A
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Tap chuck with overload coupling
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US2531638A
|
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Ignition circuit
|
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US2429364A
|
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Motion-picture projector
|
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US2536692A
|
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Temperature control mold
|
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US2585485A
|
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Distortable fastener
|
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US2448903A
|
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Displacement type casting apparatus
|
|
US2430989A
|
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Mechanism for controlling welding current
|
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US2398758A
|
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Multiple rheostat and potentiometer
|
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US2461293A
|
|
Ignition circuit
|
|
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|
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Pattern having integral ventforming members
|
|
US2441715A
|
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Smoking pipe
|
|
US2441714A
|
|
Smoking pipe
|
|
US2379174A
|
|
Turbotransmission
|
|
US2357018A
|
|
Smoking appliance
|
|
US1438324A
|
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Machine for cutting key seats
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