Patents by Inventor Alexander D. Grant

Alexander D. Grant has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Remote control
    Patent number: D307739
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: May 8, 1990
    Assignee: Tunstall Telecom Limited
    Inventor: Alexander D. Grant
  • Pipe coupling
    Patent number: D354801
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: January 24, 1995
    Assignee: Hepworth Building Products Limited
    Inventors: Alexander D. Grant, Ronald A. Ireland