Patents by Inventor Harold O. Hansen

Harold O. Hansen 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).

  • Patent number: 4232200
    Abstract: An improved dialing system, basically powered through the line, that provides automatic dialing of stored, frequently used numbers and the last number dialed. Self-test capabilities are provided to enable and test all the stored number memory locations automatically. Outgoing call restrictions are provided with a programmable code to bypass the call restriction. The system automatically converts push button dialing to rotary outpulsing, or generates dual tone multi-frequency dialing signals.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: November 4, 1980
    Assignee: United Networks, Inc.
    Inventors: Alfred M. Hestad, Jan Synek, Harold O. Hansen