Patents by Inventor Donald D. Dryzal

Donald D. Dryzal 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).

  • Glove protector
    Patent number: D272105
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: January 10, 1984
    Inventor: Donald D. Dryzal
  • Welder's glove protector
    Patent number: D282409
    Type: Grant
    Filed: May 19, 1983
    Date of Patent: February 4, 1986
    Inventor: Donald D. Dryzal
  • Protector for welder's gloves
    Patent number: D316915
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: May 14, 1991
    Inventor: Donald D. Dryzal