Patents by Inventor Marcus Copperman

Marcus Copperman 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).

  • Vacuum nozzle for carpeted stair treads and risers
    Patent number: 4374446
    Abstract: A suction nozzle is provided which is comprised of a one piece outer cylindrical body member of predetermined fixed dimensions provided with an internal movable sleeve for adapting the nozzle to effectively and more conveniently extract dirt from carpeted stair treads or riser without changing the dimensions of the nozzle.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: February 22, 1983
    Assignee: Certified Chemical & Equipment Co.
    Inventor: Marcus Copperman