TREA

Walter E. Sear

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  • New York, NY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Water purification system
    • Patent number 4,172,767
    • Issue date Oct 30, 1979
    • Walter E. Sear
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents