TREA

A & O Engineering, Inc.

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  • Bridgeville, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Impact crushers
    • Patent number 4,573,643
    • Issue date Mar 4, 1986
    • A & O Engineering, Inc.
    • Axel W. Orphall
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...