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US3345562A
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Ac-dc meter
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Circuit for extending bandwidth of a modulated amplifier
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Amplifier of the transformer-output type with regenerative feedback networks for reducing low frequency distortion
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Automatic gain control amplifier
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Automatic light control
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Modulation system
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Dipole antenna having detachable connector at antenna-to-lead-in junction
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Modulation system
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Cathanode output bridge amplifier
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Modulation system
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High fidelity amplifier
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Device for automatically governing dynamic level range in audio frequency circuits
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Display card exhibiting device for television broadcasting
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Amplifier control system
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Automatic frequency control
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Arm for holding a stylus for use with sound records
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Electrodynamic phonograph pickup
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US2551506A
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Swingable arm for holding a sound pickup stylus
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