Patents by Inventor S. Alan Stewart

S. Alan Stewart 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).

  • Patent number: 4059933
    Abstract: Apparatus for sealingly joining sheets of construction material laid with edges abutting over an underlying frame and having edges rabbeted to form a joint channel including a pad for lying in the channel, a cap permanently adhered to the pad member and having edges extending past the pad for sealingly contacting the unrabbeted sheet surfaces, a metal strip embedded in the pad, and screws for securing the metal strip to the frame to capture the rabbeted surfaces of the sheets.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: November 29, 1977
    Assignee: Grefco, Inc.
    Inventors: Richard S. Funk, S. Alan Stewart, David L. Ruff