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Switch and optical sensor assembly for recorder
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Tiltable support bracket for slidably supporting quartz support tubes for semiconductor wafer processing boards, and processing apparatus embodying such brackets
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Embedded servo track following system and method for writing servo tracks
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Gas tube overvoltage protector with back-up gap
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Method and apparatus for mounting magnetic tape heads
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Compensator for CRT deflection yokes and the like
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Meter to printer coupling circuit
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Servo system for positioning a reading transducer, recording media for use in that system, and process for positioning a reading / recording transducer
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Fixed count terminal
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Pushbutton switch assemblies for telephone sets
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Apparatus for use in a telephone exchange including an operator cordboard position
