Patents by Inventor William C. Richards

William C. Richards 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).

  • Plant holder
    Patent number: D352674
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: November 22, 1994
    Inventors: Roger H. Richards, William C. Richards, Arie N. Sharon
  • Adjustable plant holder
    Patent number: D383916
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: September 23, 1997
    Inventors: Roger H. Richards, William C. Richards
  • Adjustable plant holder
    Patent number: D393159
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: April 7, 1998
    Inventors: Roger H. Richards, William C. Richards