Patents Assigned to Deres Development Corporation
  • Cushioning material construction
    Patent number: 4283864
    Abstract: A cushioning material system or construction having at least one module comprising balanced levers and displaceable bearing means, as incorporated in footwear, and such a cushioning material further comprising bearing plates attached to a plurality of said modules which may be made in sheet form for various cushioning purposes.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: August 18, 1981
    Assignee: Deres Development Corporation
    Inventor: Donald E. Lipfert
  • Cushioning material construction
    Patent number: 4033567
    Abstract: A cushioning material system or construction having at least one module comprising balanced levers and displaceable bearing means.
    Type: Grant
    Filed: April 2, 1973
    Date of Patent: July 5, 1977
    Assignee: Deres Development Corporation
    Inventor: Donald Ernest Lipfert
  • Protective head gear and body equipment
    Patent number: 4032127
    Abstract: Protective equipment for the head, body, or the like, having at least one module comprising levers and displaceable bearing means.
    Type: Grant
    Filed: February 4, 1974
    Date of Patent: June 28, 1977
    Assignee: Deres Development Corporation
    Inventor: Donald Ernest Lipfert