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US3559100A
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Electromagnetically driven tuning fork
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Multiple tuning fork resonator filter with feedback
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Balanced and coupled tuning fork mounting structure for suppressing reed vibration
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Double fork, tuning fork resonator filters
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Electrostatic tuning fork resonator
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Tuning fork resonator mounted to damp externally originating mechanical disturbances
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Transistorized tuning fork oscillator
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Tuning fork resonator with driving and feedback coils decoupling
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Tuning fork oscillator
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Electrical equipment housing
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Voltage regulator for a. c. power supplies
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US2806400A
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Tuning forks
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