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John A. Clark

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  • Washington, DC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sound attenuation devices
    • Patent number 12,090,027
    • Issue date Sep 17, 2024
    • John Clark
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Sound attenuation devices
    • Patent number 11,660,234
    • Issue date May 30, 2023
    • John Clark
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Sound attenuation devices
    • Patent number 11,013,637
    • Issue date May 25, 2021
    • John Clark
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Electrode for artificial pacemaker
    • Patent number 4,112,952
    • Issue date Sep 12, 1978
    • The United States of America as represented by the Secretary of Health, Educa...
    • George M. Thomas
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

  • Information Patent Application

    SOUND ATTENUATION DEVICES
    • Publication number 20230248576
    • Publication date Aug 10, 2023
    • John Clark
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    SOUND ATTENUATION DEVICES
    • Publication number 20210236340
    • Publication date Aug 5, 2021
    • John Clark
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    SOUND ATTENUATION DEVICES
    • Publication number 20210045926
    • Publication date Feb 18, 2021
    • John Clark
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    INTERACTIVE FANTASY SPORTS GAMING SYSTEM
    • Publication number 20140121013
    • Publication date May 1, 2014
    • Tim Carson
    • A63 - SPORTS GAMES AMUSEMENTS