TREA

Orton D. Bergren

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  • Menlo Park, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mechanically erasable ballpoint ink
    • Patent number 5,160,369
    • Issue date Nov 3, 1992
    • SRI Inc.
    • Dean B. Parkinson
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Ophthalmologic phantom system
    • Patent number 4,865,552
    • Issue date Sep 12, 1989
    • Maloney; William F.
    • William F. Maloney
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Ophthalmologic lens phantom system
    • Patent number 4,762,496
    • Issue date Aug 9, 1988
    • Maloney; William F.
    • William F. Maloney
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Identification card with heat reactive coating
    • Patent number 4,519,632
    • Issue date May 28, 1985
    • Computer Identification Systems, Inc.
    • Dean B. Parkinson
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER