TREA

Stephen P. Hirsch

Follow

Person

  • North Prairie, WI, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Ball bearing and retainer therefor
    • Patent number 4,470,643
    • Issue date Sep 11, 1984
    • Realist, Inc.
    • George H. Schaefer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Optical and focusing arrangement for microfiche reader
    • Patent number 4,410,248
    • Issue date Oct 18, 1983
    • Realist, Inc.
    • George H. Schaefer
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Microfiche reader carrier assembly
    • Patent number 4,400,068
    • Issue date Aug 23, 1983
    • Realist, Inc.
    • Stephen P. Hirsch
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY