Patents by Inventor Attle D. Johnson

Attle D. Johnson 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).

  • Low voltage operated coin relay
    Patent number: 4903294
    Abstract: A coin relay adapted for use with an associated coin hopper mechanism particularly adapted for use in a microcomputer based deregulated paystation. The relay requires only minimum voltages to operate with the associated coin relay operate and release timing controlled by an assoicated microcomputer.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: February 20, 1990
    Assignee: Palco Telecom Inc.
    Inventors: Gary Grantland, Attle D. Johnson
  • Paystation monitor circuit to prevent fraudulent use
    Patent number: 4896348
    Abstract: A paystation circuit that monitors coin battery signals, hookswitch detect signals and initial rate conditions to provide proper reset signals to the totalizer circuit enabling and/or disabling the dial keypad in order to prevent fraudulent paystation usage.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: January 23, 1990
    Assignee: Palco Telecom Inc.
    Inventors: Gary Grantland, Attle D. Johnson