Patents by Inventor Frank C. Papacek

Frank C. Papacek 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).

  • Frostproof hydrants for use in fluid handling
    Patent number: 3943963
    Abstract: An improved frostproof hydrant having a readily removable valve seat-valve body assembly which may be easily replaced from the nozzle end of the hydrant as a single unit or as a portion thereof without any special alignment.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: March 16, 1976
    Inventor: Frank C. Papacek