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John MacDonald & Company (Pneumatic Tools) Ltd.

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  • GB
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  • Information Patent Grant

    Fluid operated undercutter
    • Patent number 4,153,121
    • Issue date May 8, 1979
    • John MacDonald & Company (Pneumatic Tools) Ltd.
    • David T. Allan
    • B28 - WORKING CEMENT, CLAY, OR STONE

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