Patents by Inventor Layne G. Christensen

Layne G. Christensen 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).

  • In-wall retractable vacuum cleaning hose access and storage device
    Patent number: 5526842
    Abstract: An access and storage device for a retractable vacuum cleaning hose for use in buildings having a central vacuum generating system, said device being adapted for installation within a partition wall or the like of the structure, with access being provided to the hose so that it may be withdrawn either to its full length or to any needed length for cleaning use and subsequently automatically retracted back through the wall onto the hose storage reel.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: June 18, 1996
    Inventor: Layne G. Christensen