Patents by Inventor Frank Petera

Frank Petera 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).

  • Band type lapidary saw
    Patent number: 4185609
    Abstract: A band type stone saw comprising a toothless blade having its cutting reach inclined and ascending toward the workpiece and wetted with continuously agitated liquid and abrasive slurry so that the slurry advances to the cutting edge of the blade and the blade carries the slurry upward into the developing saw kerf.
    Type: Grant
    Filed: June 23, 1978
    Date of Patent: January 29, 1980
    Inventor: Frank Petera