Patents by Inventor John B. Sink

John B. Sink 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).

  • Invalid seat cushion
    Patent number: D278779
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: May 14, 1985
    Inventor: John B. Sink
  • Chair restraining device
    Patent number: D279362
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: June 25, 1985
    Inventor: John B. Sink
  • Catheter bag holder
    Patent number: D290403
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: June 16, 1987
    Inventor: John B. Sink