TREA

National Rolling Mills, Inc.

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Organization

  • Malvern, PA, US
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Decorative suspended ceiling
    • Patent number 5,390,456
    • Issue date Feb 21, 1995
    • National Rolling Mills, Inc.
    • William J. Platt
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    Method of making a beam for a decorative suspended ceiling
    • Patent number 5,279,033
    • Issue date Jan 18, 1994
    • National Rolling Mills, Inc.
    • William J. Platt
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    Decorative suspended ceiling
    • Patent number 5,241,798
    • Issue date Sep 7, 1993
    • National Rolling Mills, Inc.
    • William J. Platt
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    Perimeter clip
    • Patent number 5,046,294
    • Issue date Sep 10, 1991
    • National Rolling Mills, Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Fire-rated beam with expansion relief section
    • Patent number RE33501
    • Issue date Dec 25, 1990
    • National Rolling Mills, Inc.
    • William J. Platt
    • 052 - Static structures
  • Information Patent Grant

    Method of forming a spring-like fire strip
    • Patent number 4,955,134
    • Issue date Sep 11, 1990
    • National Rolling Mills, Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Compression leg
    • Patent number 4,926,607
    • Issue date May 22, 1990
    • National Rolling Mills, Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Fire strip construction
    • Patent number 4,916,877
    • Issue date Apr 17, 1990
    • National Rolling Mills, Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Interlocking cross tee
    • Patent number 4,912,894
    • Issue date Apr 3, 1990
    • National Rolling Mills, Inc.
    • William Platt
    • E04 - BUILDING
  • Information Patent Grant

    Partition clip
    • Patent number 4,890,428
    • Issue date Jan 2, 1990
    • National Rolling Mills, Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Fire strip
    • Patent number 4,864,791
    • Issue date Sep 12, 1989
    • National Rolling Mills, Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Interlocking cross tee
    • Patent number 4,827,681
    • Issue date May 9, 1989
    • National Rolling Mills, Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Tier drop grid system
    • Patent number 4,794,745
    • Issue date Jan 3, 1989
    • National Rolling Mills Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Interlocking cross tee
    • Patent number 4,785,603
    • Issue date Nov 22, 1988
    • National Rolling Mills Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Suspended ceiling grid structure
    • Patent number 4,727,703
    • Issue date Mar 1, 1988
    • National Rolling Mills Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Laser welded ceiling grid members
    • Patent number 4,713,919
    • Issue date Dec 22, 1987
    • National Rolling Mills Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Fire-rated beam with expansion relief section
    • Patent number 4,606,166
    • Issue date Aug 19, 1986
    • National Rolling Mills Inc.
    • William J. Platt
    • E04 - BUILDING
  • Information Patent Grant

    Fire-rated ceiling grid cross joint
    • Patent number 4,106,878
    • Issue date Aug 15, 1978
    • National Rolling Mills Company
    • Paul H. Jones
    • E04 - BUILDING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

  • Information Trademark

    73744756 - TIER DROP
    • Serial number 73744756
    • Registration number 1530539
    • Filing date Aug 8, 1988
    • NATIONAL ROLLING MILLS INC.
    • 6 - Common metals and their alloys