TREA

David S. Krafsur

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  • Loveland, CO, US
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    Process for improving fatigue life in spring-cushioned shoes
    • Publication number 20050247385
    • Publication date Nov 10, 2005
    • David S. Krafsur
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    Shock resistant shoe
    • Publication number 20050241184
    • Publication date Nov 3, 2005
    • Francis E. LeVert
    • A43 - FOOTWEAR
  • Information Patent Application

    Fluid flow system for spring-cush
    • Publication number 20050126040
    • Publication date Jun 16, 2005
    • Francis E. LeVert
    • A43 - FOOTWEAR
  • Information Patent Application

    Spring cushioned shoe
    • Publication number 20050126039
    • Publication date Jun 16, 2005
    • Francis E. LeVert
    • A43 - FOOTWEAR
  • Information Patent Application

    Fluid flow system for spring-cushioned shoe
    • Publication number 20030192201
    • Publication date Oct 16, 2003
    • Francise E. Levert
    • A43 - FOOTWEAR
  • Information Patent Application

    Spring cushioned shoe
    • Publication number 20030163933
    • Publication date Sep 4, 2003
    • Shoe Spring, Inc.
    • David S. Krafsur
    • A43 - FOOTWEAR
  • Information Patent Application

    Shock resistant shoe
    • Publication number 20030126760
    • Publication date Jul 10, 2003
    • Shoe Spring, Inc.
    • Francis E. LeVert
    • A43 - FOOTWEAR
  • Information Patent Application

    Spring cushioned shoe
    • Publication number 20020174567
    • Publication date Nov 28, 2002
    • Shoe Spring, Inc.
    • David Krafsur
    • A43 - FOOTWEAR
  • Information Patent Application

    Fluid flow system for spring-cushioned shoe
    • Publication number 20020088142
    • Publication date Jul 11, 2002
    • Francis E. LeVert
    • A43 - FOOTWEAR
  • Information Patent Application

    Spring cushioned shoe
    • Publication number 20010049888
    • Publication date Dec 13, 2001
    • David S. Krafsur
    • A43 - FOOTWEAR