Patents by Inventor Claude Thomas James Van Der Merwe

Claude Thomas James Van Der Merwe 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).

  • Hand tool
    Patent number: 7174643
    Abstract: The invention provides a frame (12) of a hack-saw (10) and, particularly, the handle formation (14), defines shoulder formations (22) that define a linear edge (24) on opposite sides of the extension formation (16), the operative external edge (26) of the extension formation (16) extending perpendicularly with respect of the shoulder formations (22). As such, the frame (12) of the hack-saw (10) can be used as a conventional L-square.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: February 13, 2007
    Inventor: Claude Thomas James Van Der Merwe