TREA

E. Hubbard Yonkers

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  • Watertown, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Exercise stair device
    • Patent number 4,496,147
    • Issue date Jan 29, 1985
    • Arthur D. Little, Inc.
    • Richard J. DeCloux
    • A63 - SPORTS GAMES AMUSEMENTS