TREA

Richard J. Ostroski

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  • Kansas City, MO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Bag opening device for can openers
    • Patent number 4,389,780
    • Issue date Jun 28, 1983
    • Rival Manufacturing Company
    • Richard J. Ostroski
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Device for opening sealed food bags
    • Patent number 4,360,970
    • Issue date Nov 30, 1982
    • Rival Manufacturing Company
    • Richard J. Ostroski
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Fire ladder rung
    • Patent number D254630
    • Issue date Apr 1, 1980
    • Rival Manufacturing Company
    • James B. Aberer
    • D25 - Building units and construction elements