Patent classifications
H
ELECTRICITY
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H03
ELECTRONIC CIRCUITRY
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H03J
TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
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7/00
Automatic frequency control; Automatic scanning over a band of frequencies
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H03J7/02
Automatic frequency control
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H03J7/16
where the frequency control is accomplished by mechanical means, e.g. by a motor
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