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Phase comparison circuit
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Patent number 5,039,889
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Issue date Aug 13, 1991
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U.S. Philips Corp.
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Dieter Janta
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H03 - BASIC ELECTRONIC CIRCUITRY
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Phase detector
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Patent number 4,870,303
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Issue date Sep 26, 1989
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Motorola, Inc.
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Michael McGinn
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H03 - BASIC ELECTRONIC CIRCUITRY
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-
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FM Detecting circuit
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Patent number 4,342,000
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Issue date Jul 27, 1982
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Nippon Gakki Seizo Kabushiki Kaisha
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Minoru Ogita
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H03 - BASIC ELECTRONIC CIRCUITRY
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Product circuit
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Patent number 4,308,471
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Issue date Dec 29, 1981
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Pioneer Electronic Corporation
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Akira Misawa
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G06 - COMPUTING CALCULATING COUNTING
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Automatic fine tuning circuit
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Patent number 4,283,792
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Issue date Aug 11, 1981
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Sony Corporation
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Masayuki Hongu
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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-
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FM discriminator
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Patent number 4,024,461
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Issue date May 17, 1977
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Sony Corporation
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Mitsuo Ohsawa
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Phase detector
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Patent number 4,006,423
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Issue date Feb 1, 1977
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Sony Corporation
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Yasunobu Kuniyoshi
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H03 - BASIC ELECTRONIC CIRCUITRY
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Phase comparator
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Patent number 3,970,868
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Issue date Jul 20, 1976
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Raytheon Company
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Ivor K. Clements
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G01 - MEASURING TESTING
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3927331
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Patent number 3,927,331
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Issue date Dec 16, 1975
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H03 - BASIC ELECTRONIC CIRCUITRY
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3883755
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Patent number 3,883,755
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Issue date May 13, 1975
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G01 - MEASURING TESTING
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3840817
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Patent number 3,840,817
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Issue date Oct 8, 1974
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H03 - BASIC ELECTRONIC CIRCUITRY
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3840818
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Patent number 3,840,818
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Issue date Oct 8, 1974
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3668440
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Patent number 3,668,440
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Issue date Jun 6, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3604946
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Patent number 3,604,946
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Issue date Sep 14, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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2928955
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Patent number 2,928,955
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Issue date Mar 15, 1960
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H04 - ELECTRIC COMMUNICATION TECHNIQUE