Patents by Inventor William G. Schramm

William G. Schramm 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).

  • Paper perforating device
    Patent number: 4669191
    Abstract: A paper perforating device for creating a series of linearly aligned perforations the length of a sheet of paper. The invention includes a lower member with a series of linearly aligned openings and an upper member with a corresponding number of linearly aligned teeth. Upon engagement, the teeth travel through the openings thereby piercing the paper. The invention also includes a pair of slot-engaging tabs which limit the distance the upper and lower members may travel relative to one another.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: June 2, 1987
    Inventor: William G. Schramm