Patents by Inventor Eric K. Lytra

Eric K. Lytra 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).

  • Duplicating stencil
    Patent number: 4515077
    Abstract: A duplicating stencil has its heading strip in the form of two separate regions separated by a perforation line.The holes on one region have a different arrangement from those on the other regions, so that tearing along the perforation line allows one region to be separated from the rest of the stencil and to leave the holes of the remaining region as the effective mounting holes.A single image field and a single top edge guide line apply for all of the heading strip regions.
    Type: Grant
    Filed: July 19, 1983
    Date of Patent: May 7, 1985
    Assignee: Gestetner Manufacturing Limited
    Inventors: Lewis Davidson, Brian Lees, Eric K. Lytra
  • Container for ejected used stencils
    Patent number: D262945
    Type: Grant
    Filed: January 31, 1979
    Date of Patent: February 9, 1982
    Assignee: Gestetner Limited
    Inventor: Eric K. Lytra