TREA

HOWSON-ALGRAPHY INCORPORATED

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  • CARLSTADT, NJ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Bimetallic lithographic printing plates
    • Patent number 4,052,217
    • Issue date Oct 4, 1977
    • Howson-Algraphy Limited
    • Leonard James Watkinson
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS