Patents by Inventor Leif E. Andberg

Leif E. Andberg 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).

  • Metering system for a copier/duplicator machine
    Patent number: 4058815
    Abstract: An improved metering system is provided for an electrostatic reproduction machine, the latter being capable of operating in either an automatic document handling mode or a manual mode. The system counts the number of originals per job up to a predetermined first number, the total number of originals fed into the machine, and the total number of prints made. What is counted depends on whether the machine is in the automatic mode or in the manual mode and how many prints the machine is programmed to produce.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: November 15, 1977
    Assignee: Rank Xerox Ltd.
    Inventors: George M. Warner, Leif E. Andberg