Patents Represented by Attorney Charles B. Spencer

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  • Drinking fountain
    Patent number: D257980
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: January 20, 1981
    Inventor: Peter Sorensen
  • Hump plate
    Patent number: D258089
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: January 27, 1981
    Inventor: Gustav Naslund