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Donald L. Chapman

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  • Liberty, IN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Busway tap off base assembly for preventing the ingress of dust and...
    • Patent number 5,415,557
    • Issue date May 16, 1995
    • Square D Company
    • Donald L. Chapman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Floor duct with integral interlock
    • Patent number 5,125,199
    • Issue date Jun 30, 1992
    • Square D Company
    • Robert I. Whitney
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Lay-in wireway assembly
    • Patent number 5,024,251
    • Issue date Jun 18, 1991
    • Square D Company
    • Donald L. Chapman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Pop-up service fitting
    • Patent number 5,023,396
    • Issue date Jun 11, 1991
    • Square D Company
    • Edward C. Bartee
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Junction boxes
    • Patent number 4,931,597
    • Issue date Jun 5, 1990
    • Square D Company
    • Robert L. Kimbrough
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Snap-on underfloor preset
    • Patent number 4,922,672
    • Issue date May 8, 1990
    • Square D Company
    • Edward C. Bartee
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Large capacity electrical service fitting for concrete floors
    • Patent number 4,899,506
    • Issue date Feb 13, 1990
    • Square D Company
    • Donald L. Chapman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Raintight wireway
    • Patent number 4,349,220
    • Issue date Sep 14, 1982
    • Square D Company
    • James C. Carroll
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Fire resistant fitting
    • Patent number 4,272,643
    • Issue date Jun 9, 1981
    • Square D Company
    • James C. Carroll
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Fire resistant fitting floor holes
    • Patent number 4,270,318
    • Issue date Jun 2, 1981
    • Square D Company
    • James C. Carroll
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER