Patents by Inventor Donald James Thorne

Donald James Thorne 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: 3999017
    Abstract: An apparatus is provided for transmitting a pre-recorded message to a plurality of destinations via a corresponding plurality of telephone lines. The apparatus comprises a means for storing and transmitting a message, for example a tape recorder. A switching arrangement connects a selected line to the apparatus, and means such as a dialling mechanism are used to call a desired telephone number. When the called telephone is ringing this is detected by a ring tone detector, and when the ringing ceases a switching circuit connects the tape recorder to the called telephone and transmits the pre-recorded message. When the message ceases the selected line is automatically disconnected from the apparatus.
    Type: Grant
    Filed: February 12, 1975
    Date of Patent: December 21, 1976
    Inventor: Donald James Thorne