Patents by Inventor John A. Maul

John A. Maul 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).

  • Data recorder with portable cartridge
    Patent number: 4059051
    Abstract: A data recorder is provided including a removable cartridge which carries both a sales form and an underlying log sheet. The fixed and variable data are imprinted by reciprocation of a platen carriage, with return of the carriage to the home position causing ejection of the credit card and loading of a stored energy mechanism. When the sales form is removed, the stored energy mechanism is released, whereby the log sheet is incrementally advanced to the next position.
    Type: Grant
    Filed: August 2, 1974
    Date of Patent: November 22, 1977
    Assignee: Addressograph Multigraph Corporation
    Inventors: John A. Maul, Richard E. Valentine