Patents by Inventor Llewellyn De Wet

Llewellyn De Wet 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).

  • Lock and key combination
    Patent number: 4951484
    Abstract: A lock and key combination comprising a latch (14), means (17) for mounting the latch about an axis of rotation, means (20) for biasing the latch towards a locking position, means (22) associated with the latch for rotating it and having a non-circular form, and a key (19) adapted to mate with the non-circular form of the means for rotating the latch, the key permitting the latch to be displaced about its axis of rotation against the biasing means.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: August 28, 1990
    Assignee: Nova International Corporation C.C.
    Inventors: Stanley S. Rohald, Llewellyn De Wet
  • Garment hanger
    Patent number: D302078
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: July 11, 1989
    Assignee: Nova International Corporation CC
    Inventor: Llewellyn De Wet