TREA

Ludwig Devrient

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  • Vaterstetten, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of producing an identification card
    • Patent number 4,672,891
    • Issue date Jun 16, 1987
    • G.A.O. Gesellschaft fur Automation und Organisation mbH
    • Thomas Maurer
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Check paper that is protected against forgery and tampering
    • Patent number 4,629,630
    • Issue date Dec 16, 1986
    • GAO Gesellschaft fuer Automation und Organisation mbH
    • Ludwig Devrient
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Identification card with duplicate data
    • Patent number 4,597,592
    • Issue date Jul 1, 1986
    • Thomas Maurer
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Identification card
    • Patent number 4,544,181
    • Issue date Oct 1, 1985
    • GAO Gesellschaft fur Automation und Organisation mbH
    • Thomas Maurer
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Guilloche identification card
    • Patent number 4,504,083
    • Issue date Mar 12, 1985
    • GAO Gesellschaft fur Automation und Organisation mbH
    • Ludwig Devrient
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Check paper that is protected against forgery and tampering
    • Patent number 4,496,961
    • Issue date Jan 29, 1985
    • GAO Gesellschaft fur Automation und Organisation mbH
    • Ludwig Devrient
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE