Patents by Inventor Marvin L. Weisenthal

Marvin L. Weisenthal 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: 3978555
    Abstract: A closure member for sealingly closing the neck of an inflated balloon includes a pair of legs interconnected by a hinge. One of the legs is substantially linear while the other leg has an arcuate section. Complementary sealing channels and grooves are provided on the interior surfaces of the legs. A lock sealingly closes the legs together.
    Type: Grant
    Filed: January 6, 1975
    Date of Patent: September 7, 1976
    Inventor: Marvin L. Weisenthal