Patents by Inventor Wayne H. Ledder

Wayne H. Ledder 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).

  • Event recorder with coded removable display
    Patent number: 3934123
    Abstract: An event recorder which includes a plurality of counters. An interface circuit is provided between the event recorder and a machine, the events of which are to be monitored. Signals corresponding to machine events are accumulated on the counters. A separate display unit having a connector mating with the event recorder is mated with the event recorder and the status of the counters is transferred to the display unit and displayed.
    Type: Grant
    Filed: February 11, 1974
    Date of Patent: January 20, 1976
    Assignee: Viable Systems, Inc.
    Inventors: Gottfried Maurer, Patrick S. Harris, Wayne H. Ledder