TREA

Frederick J. Bartnicki

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  • Greenville, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ladder, member for connecting a rail to a horizontal element of a l...
    • Patent number 6,142,255
    • Issue date Nov 7, 2000
    • Werner Co.
    • David E. Plotner
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Ladder top
    • Patent number D422717
    • Issue date Apr 11, 2000
    • Werner Co.
    • Frederick J. Bartnicki
    • D25 - Building units and construction elements
  • Information Patent Grant

    Front face of a ladder top
    • Patent number D413990
    • Issue date Sep 14, 1999
    • Werner Co.
    • Frederick J. Bartnicki
    • D25 - Building units and construction elements
  • Information Patent Grant

    Ladder, member for connecting a rail to a horizontal element of a l...
    • Patent number 5,791,439
    • Issue date Aug 11, 1998
    • Werner Co.
    • David E. Plotner
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Ladder, member for connecting a rail to a horizontal element of a l...
    • Patent number 5,636,706
    • Issue date Jun 10, 1997
    • Werner Co.
    • David E. Plotner
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Ladder top with bail recess
    • Patent number 5,573,081
    • Issue date Nov 12, 1996
    • Werner Co.
    • Frederick J. Bartnicki
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Hollow plastic ladder
    • Patent number 5,366,051
    • Issue date Nov 22, 1994
    • R. D. Werner Co., Inc.
    • Frederick J. Bartnicki
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Ladder top
    • Patent number 5,358,070
    • Issue date Oct 25, 1994
    • Werner Co.
    • Frederick J. Bartnicki
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Ladder top
    • Patent number 5,259,480
    • Issue date Nov 9, 1993
    • R. D. Werner Co., Inc.
    • Frederick J. Bartnicki
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Ladder top
    • Patent number D340773
    • Issue date Oct 26, 1993
    • R. D. Werner Co., Inc.
    • Frederick J. Bartnicki
    • D25 - Building units and construction elements
  • Information Patent Grant

    Ladder pail shelf
    • Patent number D340291
    • Issue date Oct 12, 1993
    • R. D. Werner Co., Inc.
    • Frederick J. Bartnicki
    • D25 - Building units and construction elements
  • Information Patent Grant

    Hollow plastic ladder
    • Patent number 5,131,495
    • Issue date Jul 21, 1992
    • R. D. Werner Co., Inc.
    • Frederick J. Bartnicki
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Extendable support
    • Patent number 5,067,589
    • Issue date Nov 26, 1991
    • R. D. Werner Co., Inc.
    • Frederick J. Bartnicki
    • E04 - BUILDING