Patents by Inventor Ronald C. Berger

Ronald C. Berger 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).

  • Electric powered trowel
    Patent number: 5102258
    Abstract: A lightweight electric trowel having an insulating block disposed in the drive connection between the trowel blades and the motor. The blades are at a fixed angle of four degrees with the leading edge of the blades being inclined at a fifteen degree angle to prevent plowing.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: April 7, 1992
    Assignee: Accon, Inc.
    Inventor: Ronald C. Berger