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Digital to analogue convertors
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Patent number 5,105,193
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Issue date Apr 14, 1992
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Marconi Electronic Devices Limited
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Alexander W. Vogt
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H03 - BASIC ELECTRONIC CIRCUITRY
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Digital coder
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Patent number 3,935,569
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Issue date Jan 27, 1976
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Compagnie Industrielle des Telecommunications Cit-Alcatel
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Francois Marcel
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H03 - BASIC ELECTRONIC CIRCUITRY
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3918035
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Patent number 3,918,035
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Issue date Nov 4, 1975
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G01 - MEASURING TESTING
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3890602
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Patent number 3,890,602
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Issue date Jun 17, 1975
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3815126
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Patent number 3,815,126
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Issue date Jun 4, 1974
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H03 - BASIC ELECTRONIC CIRCUITRY
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3803591
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Patent number 3,803,591
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Issue date Apr 9, 1974
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H03 - BASIC ELECTRONIC CIRCUITRY
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3798637
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Patent number 3,798,637
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Issue date Mar 19, 1974
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H03 - BASIC ELECTRONIC CIRCUITRY
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3787835
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Patent number 3,787,835
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Issue date Jan 22, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3766544
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Patent number 3,766,544
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Issue date Oct 16, 1973
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G01 - MEASURING TESTING
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3754233
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Patent number 3,754,233
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Issue date Aug 21, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3750142
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Patent number 3,750,142
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Issue date Jul 31, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3750156
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Patent number 3,750,156
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Issue date Jul 31, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3737893
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Patent number 3,737,893
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Issue date Jun 5, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3737894
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Patent number 3,737,894
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Issue date Jun 5, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3735390
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Patent number 3,735,390
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Issue date May 22, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3729621
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Patent number 3,729,621
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Issue date Apr 24, 1973
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G01 - MEASURING TESTING
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3729733
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Patent number 3,729,733
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Issue date Apr 24, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3719808
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Patent number 3,719,808
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Issue date Mar 6, 1973
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G05 - CONTROLLING REGULATING
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3709309
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Patent number 3,709,309
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Issue date Jan 9, 1973
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G01 - MEASURING TESTING
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3710374
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Patent number 3,710,374
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Issue date Jan 9, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3707713
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Patent number 3,707,713
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Issue date Dec 26, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3671961
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Patent number 3,671,961
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Issue date Jun 20, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3665305
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Patent number 3,665,305
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Issue date May 23, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3641564
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Patent number 3,641,564
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Issue date Feb 8, 1972
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G02 - OPTICS
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3617885
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Patent number 3,617,885
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Issue date Nov 2, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3614436
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Patent number 3,614,436
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Issue date Oct 19, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3613067
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Patent number 3,613,067
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Issue date Oct 12, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3603978
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Patent number 3,603,978
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Issue date Sep 7, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3594783
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Patent number 3,594,783
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Issue date Jul 20, 1971
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G01 - MEASURING TESTING