Patents by Inventor Paul Robertelli

Paul Robertelli 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).

  • Dental prophylactic handpiece
    Patent number: 3987549
    Abstract: A dental prophylactic handpiece is provided with a drivable tool-receiving member having a square opening which is internally serrated. The tool-receiving member, at least in the region of the opening, is resilient so as to permit variation in the size of the opening. A dental tool is detachably connected in said tool-receiving member by means of an enlarged shank having a complementary externally contoured surface including peripherally extending serrations.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: October 26, 1976
    Assignee: Lawrence Peska Associates, Inc.
    Inventor: Paul Robertelli