TREA

Robert E. Heffner

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  • Lower Burrell, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for making an easy opening container end closure
    • Patent number 4,685,849
    • Issue date Aug 11, 1987
    • Aluminum Company of America
    • Robert L. LaBarge
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Easy opening container end closure
    • Patent number 4,648,528
    • Issue date Mar 10, 1987
    • Aluminum Company of America
    • Robert L. LaBarge
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Container sealing cap
    • Patent number 4,580,692
    • Issue date Apr 8, 1986
    • Aluminum Company of America
    • Robert L. La Barge
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for making a metal can end
    • Patent number 3,957,005
    • Issue date May 18, 1976
    • Aluminum Company of America
    • Robert E. Heffner
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...