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GB734180A
|
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Pin block and process of producing it
|
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US2682616A
|
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Frequency dividing system
|
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GB707111A
|
|
Bearings and bushes
|
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US2585357A
|
|
Control system for electronic musical instruments
|
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US2548890A
|
|
Upright piano action
|
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US2576760A
|
|
System for the production and use of electric oscillations for control purposes
|
|
US2576759A
|
|
Method and means for producing tunes and voices photoelectrically
|
|
US2554665A
|
|
Fall board mechanism
|
|
US2558653A
|
|
Generator for electric pulsations of audio-frequency
|
|
GB664734A
|
|
Shutter mechanism
|
|
US2576758A
|
|
System for preventing transients in photoelectric musical instruments
|
|
US2580438A
|
|
Bearing assembly
|
|
US2542065A
|
|
Tremolo switching circuits in electric musical instruments
|
|
US2641828A
|
|
Aligning and freeing bearings
|
|
US2498569A
|
|
Volume control switch and the like
|
|
US2576764A
|
|
Combination stop mechanism
|
|
US2557133A
|
|
Coupler system in electric musical instruments
|
|
US2506599A
|
|
Shutter mechanism
|
|
US2586664A
|
|
Musical instrument employing continuously moving members
|
|
US2575230A
|
|
Electrically noiseless progressive contact means
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