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Information holding device
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Patent number 4,670,860
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Issue date Jun 2, 1987
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QMC Industrial Research Limited
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Edward G. Wilson
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G11 - INFORMATION STORAGE
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3453387
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Patent number 3,453,387
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Issue date Jul 1, 1969
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G06 - COMPUTING CALCULATING COUNTING
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3407341
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Patent number 3,407,341
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Issue date Oct 22, 1968
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G11 - INFORMATION STORAGE
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3248564
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Patent number 3,248,564
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Issue date Apr 26, 1966
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G11 - INFORMATION STORAGE
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3160818
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Patent number 3,160,818
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Issue date Dec 8, 1964
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G06 - COMPUTING CALCULATING COUNTING
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3155822
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Patent number 3,155,822
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Issue date Nov 3, 1964
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G06 - COMPUTING CALCULATING COUNTING
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3076180
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Patent number 3,076,180
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Issue date Jan 29, 1963
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G11 - INFORMATION STORAGE
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2912583
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Patent number 2,912,583
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Issue date Nov 10, 1959
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G11 - INFORMATION STORAGE
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2770737
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Patent number 2,770,737
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Issue date Nov 13, 1956
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G11 - INFORMATION STORAGE
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2691727
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Patent number 2,691,727
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Issue date Oct 12, 1954
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G11 - INFORMATION STORAGE