TREA

Bergman; Roger E.

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  • Vallejo, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wheelbarrow with removable mixer
    • Patent number 4,060,225
    • Issue date Nov 29, 1977
    • Bergman; Roger E.
    • Art Cunningham
    • B28 - WORKING CEMENT, CLAY, OR STONE