Ralph E. Unruh

Person

  • Denver, PA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Floor tile product and process

    • Patent number 4,689,259
    • Issue date Aug 25, 1987
    • Armstrong World Industries, Inc.
    • Jesse D. Miller
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    Durable, low-maintenance flooring tile

    • Patent number 4,504,523
    • Issue date Mar 12, 1985
    • Armstrong World Industries, Inc.
    • Jesse D. Miller
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Durable, low-maintenance flooring tile

    • Patent number 4,418,109
    • Issue date Nov 29, 1983
    • Armstrong World Industries, Inc.
    • Jesse D. Miller
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL