Patents by Inventor Edwin L. Lange

Edwin L. Lange 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).

  • Security device
    Patent number: 4881768
    Abstract: A security device for securing a sliding window or door in a sliding window or door and frame assembly. The security device is positioned at an upper region of the sliding window or door and frame assembly to prevent removal of the sliding window or door from the frame when such removal is attempted.A method for securing a sliding window or door and frame assembly using such security device, along with a sliding window or door and frame assembly incorporated such a security device are also described.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: November 21, 1989
    Assignees: Kenneth G. Kavanagh, Edward I. Kavanagh
    Inventor: Edwin L. Lange
  • Screw
    Patent number: D303494
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: September 19, 1989
    Assignees: Kenneth Gordon Kavanagh, Edward Ian Kavanagh
    Inventor: Edwin L. Lange