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Thermal printing apparatus
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Patent number 4,536,775
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Issue date Aug 20, 1985
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NCR Canada Ltd. - NCR Canada LTEE
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Trevor A. Calnek
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Control unit for a serial printer
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Patent number 4,251,161
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Issue date Feb 17, 1981
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Ing. C. Olivetti & C., S.p.A.
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Marcello Cresti
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Daisy type print wheel apparatus
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Patent number 4,128,346
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Issue date Dec 5, 1978
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Periphonics Corporation
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Evan L. Ragland
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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3687071
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Patent number 3,687,071
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Issue date Aug 29, 1972
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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3420349
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Patent number 3,420,349
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Issue date Jan 7, 1969
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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3227258
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Patent number 3,227,258
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Issue date Jan 4, 1966
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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3072047
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Patent number 3,072,047
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Issue date Jan 8, 1963
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G06 - COMPUTING CALCULATING COUNTING