Patents by Inventor L. Birt Kellam

L. Birt Kellam 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).

  • Vehicle with raisable roof
    Patent number: 4262956
    Abstract: A raisable roof structure for a van which includes a secondary roof, a pair of outwardly hinging panels at both the front and rear of the roof structure, and a pair of inwardly hinging panels on both sides. When the secondary roof is lowered and the side panels are folded in, they form a smooth, finished interior for the van. A motor and special hidden mechanisms raise and lower the secondary roof structure.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: April 21, 1981
    Inventor: L. Birt Kellam