TREA

Mark D. Schaefer

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  • Waukesha, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Four-stroke internal combustion engine
    • Patent number 6,810,849
    • Issue date Nov 2, 2004
    • Briggs & Stratton Corporation
    • Nicholas Robert Hirsch
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Swim stroke exercise device
    • Patent number 6,790,163
    • Issue date Sep 14, 2004
    • Keith Van De Laarschot
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Extendable tool lock
    • Patent number 6,272,755
    • Issue date Aug 14, 2001
    • Alterra Holdings Corporation
    • Vern Mittlesteadt
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Remote gripping or cutting apparatus having a rotatable head
    • Patent number 6,105,257
    • Issue date Aug 22, 2000
    • Fiskars Inc.
    • Alan Rutkowski
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Extendable tool
    • Patent number 5,933,965
    • Issue date Aug 10, 1999
    • Fiskars Inc.
    • Erkki Olavi Linden
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Patents Applicationslast 30 patents

  • Information Patent Application

    Four-stroke internal combustion engine
    • Publication number 20040255895
    • Publication date Dec 23, 2004
    • Nicholas Robert Hirsch
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES