Patents by Inventor Erwin W. Grundman

Erwin W. Grundman 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).

  • Venetian umbrella
    Patent number: 4022233
    Abstract: An umbrella structured device which retracts to a compact size including an encircling, retractable and extendable outer drape which can substantially completely protect the umbrella user from rain or other inclement weather. A collapsible attachment provides a means for carrying the umbrella while freeing the user's hands.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: May 10, 1977
    Inventor: Erwin W. Grundman