TREA

Frank R. Keeler

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  • Needham, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

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    • Patent number D272530
    • Issue date Feb 7, 1984
    • American District Telegraph Company
    • H. Patrick Thornton
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

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    • Patent number D272531
    • Issue date Feb 7, 1984
    • American District Telegraph Company
    • H. Patrick Thornton
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

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    • Patent number D272436
    • Issue date Jan 31, 1984
    • American District Telegraph Company
    • Beth A. Trabucchi
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

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    • Patent number D272434
    • Issue date Jan 31, 1984
    • American District Telegraph Company
    • H. Patrick Thornton
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

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    • Patent number D272435
    • Issue date Jan 31, 1984
    • American District Telegraph Company
    • H. Patrick Thornton
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

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    • Patent number D272433
    • Issue date Jan 31, 1984
    • American District Telegraph Company
    • Beth A. Trabucchi
    • D13 - Equipment for production, distribution, or transformation of energy