Patents Assigned to Design Pak, Incorporated
  • Coin display case
    Patent number: 4592465
    Abstract: A coin display case includes an outer lens, an inner lens and a central laminate. The laminate is held between the outer lens and the inner lens. The laminate further includes a hole for accepting a coin. The laminate is made out of a layer of flexible foamed material sandwiched between two layers of sulfur-free acid neutral paper.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: June 3, 1986
    Assignee: Design Pak, Incorporated
    Inventor: Edmund W. E. Stein