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Tone arm
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Patent number 4,570,253
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Issue date Feb 11, 1986
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William H. Firebaugh
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G11 - INFORMATION STORAGE
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Tone arm damping device
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Patent number 4,305,147
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Issue date Dec 8, 1981
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Pioneer Electronic Corporation
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Junichi Onishi
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G11 - INFORMATION STORAGE
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Phonograph
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Patent number 4,277,070
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Issue date Jul 7, 1981
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Cranfield Institute of Technology
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Jack Dinsdale
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G11 - INFORMATION STORAGE
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Tone arm
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Patent number 4,257,615
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Issue date Mar 24, 1981
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Hans H. Morch
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G11 - INFORMATION STORAGE
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Tone arm
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Patent number 4,251,080
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Issue date Feb 17, 1981
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Jury N. Sumachev
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G11 - INFORMATION STORAGE
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Cueing control
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Patent number 3,973,777
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Issue date Aug 10, 1976
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Avnet, Inc.
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Dwipendra Nath Guha
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G11 - INFORMATION STORAGE
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3836155
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Patent number 3,836,155
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Issue date Sep 17, 1974
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G11 - INFORMATION STORAGE
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3647224
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Patent number 3,647,224
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Issue date Mar 7, 1972
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G11 - INFORMATION STORAGE
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3414271
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Patent number 3,414,271
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Issue date Dec 3, 1968
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G11 - INFORMATION STORAGE
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3366382
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Patent number 3,366,382
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Issue date Jan 30, 1968
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G11 - INFORMATION STORAGE
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3227458
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Patent number 3,227,458
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Issue date Jan 4, 1966
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G11 - INFORMATION STORAGE
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3028161
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Patent number 3,028,161
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Issue date Apr 3, 1962
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G11 - INFORMATION STORAGE
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2948783
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Patent number 2,948,783
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Issue date Aug 9, 1960
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G11 - INFORMATION STORAGE
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2356467
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Patent number 2,356,467
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Issue date Aug 22, 1944
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G11 - INFORMATION STORAGE
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1792637
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Patent number 1,792,637
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Issue date Feb 17, 1931
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G11 - INFORMATION STORAGE
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1611065
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Patent number 1,611,065
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Issue date Dec 14, 1926
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G11 - INFORMATION STORAGE