Patents by Inventor Rubin Goldman

Rubin Goldman 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).

  • Punching holes in thin sheet material
    Patent number: 3949631
    Abstract: An apparatus for punching holes in thin sheet stock includes an improved clamping arrangement which holds the sheet stock firmly during the punching operation in the regions surrounding the hole to be cut as well as in the slug region which is to be cut from the sheet.
    Type: Grant
    Filed: October 3, 1974
    Date of Patent: April 13, 1976
    Assignee: Rubin Goldman
    Inventors: Rubin Goldman, Morris Meyerkopf