TREA

Edward C. Dougherty

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  • Dracut, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Within-line color change printing
    • Patent number 4,391,540
    • Issue date Jul 5, 1983
    • Centronics Data Computer Corporation
    • Edward C. Dougherty
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS