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Gramophone record
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Patent number 9,886,969
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Issue date Feb 6, 2018
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Ulvac Taiwan Inc.
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Yun-Hsiang Wei
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G11 - INFORMATION STORAGE
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Phonograph record conditioner
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Patent number 4,689,253
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Issue date Aug 25, 1987
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Irwin Rowe
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C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
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Video disc processing
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Patent number 4,472,337
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Issue date Sep 18, 1984
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RCA Corporation
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Robert H. Huck
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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High density information disc
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Patent number 4,346,468
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Issue date Aug 24, 1982
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RCA Corporation
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Joseph R. Preston
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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High density information disc
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Patent number 4,346,469
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Issue date Aug 24, 1982
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RCA Corporation
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Louis J. Hillenbrand
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Video disc lubricants
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Patent number 4,216,970
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Issue date Aug 12, 1980
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RCA Corporation
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Chih C. Wang
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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