Patents by Inventor Michael Drori

Michael Drori 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).

  • Method of manufacturing level vials
    Patent number: 4436686
    Abstract: A method for forming vials for levels wherein a barrel-shaped core is first molded from an opaque thermoplastic in a double-injection molding machine and has at least a pair of spaced annular ribs integral therewith. A transparent plastic vial is then molded about the core in the same machine. Thereafter, the core is removed, severing the ribs which remain in the vial body and serve as bubble indicia.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: March 13, 1984
    Inventor: Michael Drori
  • Nail driver
    Patent number: D273759
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: May 8, 1984
    Inventor: Michael Drori