and bearing the symbols on a surface parallel to the axis of rotation

Patents Grantslast 30 patents

  • Information Patent Grant

    Place value teaching device

    • Patent number 10,127,830
    • Issue date Nov 13, 2018
    • Tony Jay Ballew
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Music teaching device

    • Patent number 9,489,859
    • Issue date Nov 8, 2016
    • Federico Paulovich
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Teaching aid

    • Patent number 6,676,415
    • Issue date Jan 13, 2004
    • Direct Educational Services Limited
    • Roger Walker
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Toy having rotating element

    • Patent number 6,648,647
    • Issue date Nov 18, 2003
    • LeapFrog Enterprises, Inc.
    • Michael C. Wood
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Phrase-composing device featuring interlocking collars

    • Patent number 6,638,072
    • Issue date Oct 28, 2003
    • Matthew Steven Sarconi
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Wheel puzzle game book

    • Patent number 6,095,818
    • Issue date Aug 1, 2000
    • William I. Brazley
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Music teaching aid

    • Patent number 6,031,172
    • Issue date Feb 29, 2000
    • Musacus International Limited
    • Marios Gabriel Papadopoulos
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Element for a didactic play, and a set formed by such elements

    • Patent number 5,114,349
    • Issue date May 19, 1992
    • Alessandro Quercetti
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    Rotational educational apparatus

    • Patent number 4,902,230
    • Issue date Feb 20, 1990
    • Stephen P. Jones
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    Device for encouraging children to brush their teeth regularly

    • Patent number 4,878,845
    • Issue date Nov 7, 1989
    • Lindsay; Tom E.
    • Tom E. Lindsay
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    Educational toy

    • Patent number 4,534,736
    • Issue date Aug 13, 1985
    • Ben Cogdill
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Spelling machine

    • Patent number 4,340,373
    • Issue date Jul 20, 1982
    • Arco Industries Ltd.
    • Bruce M. D'Andrade
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Amusement device for spelling education

    • Patent number 4,146,978
    • Issue date Apr 3, 1979
    • Marvin Glass & Associates
    • Jeffrey D. Breslow
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Educational toy

    • Patent number 4,146,977
    • Issue date Apr 3, 1979
    • Maryhannah S. Barberi
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Educational device for dyslexic children

    • Patent number 4,123,853
    • Issue date Nov 7, 1978
    • Janis A. Dickensheet
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    Teaching device

    • Patent number 4,123,852
    • Issue date Nov 7, 1978
    • Vera Zimowski
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    Rollers with plural detents

    • Patent number 4,026,043
    • Issue date May 31, 1977
    • Andrew Caruso
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    3817614

    • Patent number 3,817,614
    • Issue date Jun 18, 1974
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    3717942

    • Patent number 3,717,942
    • Issue date Feb 27, 1973
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    3674905

    • Patent number 3,674,905
    • Issue date Jul 4, 1972
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    3574957

    • Patent number 3,574,957
    • Issue date Apr 13, 1971
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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    3462857

    • Patent number 3,462,857
    • Issue date Aug 26, 1969
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    2496498

    • Patent number 2,496,498
    • Issue date Feb 7, 1950
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2461926

    • Patent number 2,461,926
    • Issue date Feb 15, 1949
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    2411717

    • Patent number 2,411,717
    • Issue date Nov 26, 1946
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    2049178

    • Patent number 2,049,178
    • Issue date Jul 28, 1936
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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    1995154

    • Patent number 1,995,154
    • Issue date Mar 19, 1935
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    1470845

    • Patent number 1,470,845
    • Issue date Oct 16, 1923
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    1391986

    • Patent number 1,391,986
    • Issue date Sep 27, 1921
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    1386248

    • Patent number 1,386,248
    • Issue date Aug 2, 1921
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Patents Applicationslast 30 patents