Patents by Inventor Alfred George Huelsekopf

Alfred George Huelsekopf 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).

  • Window construction
    Patent number: 4034510
    Abstract: A window assembly in which two window units are slidably mounted and in which one of the window units cannot be removed until the other has been removed. The removal of a first of the window units releases the sash locking member for lateral movement within the frame to permit overlapping lips of the other window unit and its associated frame to move out of overlapping engagement with one another.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: July 12, 1977
    Assignee: Com-Dor Supply Limited
    Inventor: Alfred George Huelsekopf
  • Window frame
    Patent number: D248242
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: June 20, 1978
    Inventor: Alfred George Huelsekopf