Patents by Inventor Carl J. Olsen

Carl J. Olsen 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).

  • Sash lock
    Patent number: 5582445
    Abstract: Sash lock for double hung windows which substantially limits movement of the sashes upon engagement of the sash lock. The sash lock also has an improved latching construction which results in a simple, easily manufactured latching portion.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: December 10, 1996
    Assignee: Andersen Corporation
    Inventors: Carl J. Olsen, William L. Zemke
  • Sash lock
    Patent number: D350275
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: September 6, 1994
    Assignee: Andersen Corporation
    Inventors: Carl J. Olsen, William L. Zemke