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Thermal recording method
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Patent number 4,777,492
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Issue date Oct 11, 1988
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Canon Kabushiki Kaisha
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Toshikazu Ohnishi
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Automatic flux mapping system
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Patent number 4,255,234
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Issue date Mar 10, 1981
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Westinghouse Electric Corp.
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James A. Neuner
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G01 - MEASURING TESTING
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Graphic recording system
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Patent number 4,096,484
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Issue date Jun 20, 1978
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Edo Western Corporation
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Radford G. Ferre
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G01 - MEASURING TESTING
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3880007
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Patent number 3,880,007
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Issue date Apr 29, 1975
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G01 - MEASURING TESTING