TREA

Carl R. Graf

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  • Whitehall, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Variable density grinding media
    • Patent number 5,076,507
    • Issue date Dec 31, 1991
    • Pennsylvania Crusher Corporation
    • Carl R. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Mill screen apparatus
    • Patent number 5,062,601
    • Issue date Nov 5, 1991
    • Pennsylvania Crusher Corporation
    • Carl R. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Gyratory crusher
    • Patent number 4,779,808
    • Issue date Oct 25, 1988
    • Fuller Company
    • Carl R. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Method of operating breaker/crusher
    • Patent number 4,009,834
    • Issue date Mar 1, 1977
    • Pennsylvania Crusher Corporation
    • William F. Hahn
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Material reducer
    • Patent number 3,946,950
    • Issue date Mar 30, 1976
    • Pennsylvania Crusher Corporation
    • Carl R. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Material reducer
    • Patent number 3,936,004
    • Issue date Feb 3, 1976
    • Pennsylvania Crusher Corporation
    • Carl R. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Breaker/crusher
    • Patent number 3,931,937
    • Issue date Jan 13, 1976
    • Pennsylvania Crusher Corporation
    • William F. Hahn
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...