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David L. Williams

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  • Reading, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sustained released delivery system for use in the periodontal pocket
    • Patent number 5,230,895
    • Issue date Jul 27, 1993
    • Copley Pharmaceutical Inc.
    • Ronald F. Czarnecki
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Powder blower device
    • Patent number 4,184,258
    • Issue date Jan 22, 1980
    • The United States of America as represented by the Department of Health, Educ...
    • James E. Barrington
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE