Patents Represented by Attorney John R. Powell

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  • Vent cover
    Patent number: D245255
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: August 2, 1977
    Inventor: William V. Porter
  • Pipe vent
    Patent number: D245333
    Type: Grant
    Filed: May 26, 1976
    Date of Patent: August 9, 1977
    Inventors: William V. Porter, Maurice A. Riordan
  • Combined collapsible beach rest and carrying case
    Patent number: D260577
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: September 8, 1981
    Inventor: William V. Porter