Patents by Inventor Doris Brosk

Doris Brosk 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).

  • Patent number: D246336
    Type: Grant
    Filed: February 20, 1976
    Date of Patent: November 15, 1977
    Inventor: Doris Brosk
  • Patent number: D250737
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: January 9, 1979
    Inventor: Doris Brosk
  • Patent number: D253497
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: November 27, 1979
    Inventor: Doris Brosk