Patents by Inventor Alvin W. Roggenkamp

Alvin W. Roggenkamp 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).

  • Detachable bed legs
    Patent number: 5477571
    Abstract: A leg apparatus for convenient attachment to a conventional angle-brace bed frame such that the height of the bed may be increased thereby increasing the area for storage beneath and also for producing a more aesthetically pleasing appearance. The invention embodies one type of leg for attachment to the perimeter frame and a second type of leg for attachment to the frame cross-member.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: December 26, 1995
    Assignee: A-1 Manufacturing Corporation
    Inventors: Alvin W. Roggenkamp, Timothy J. McDonnell