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Betty Jo Keitzer

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  • Lake Wales, FL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multipurpose check writing guide
    • Patent number 5,616,032
    • Issue date Apr 1, 1997
    • John E. Keitzer
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Check writing guide
    • Patent number 4,003,143
    • Issue date Jan 18, 1977
    • Keitzer; Betty J.
    • John E. Keitzer
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS