Patents by Inventor Douglas R. Chester

Douglas R. Chester 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: 4341926
    Abstract: Apparatus and method for the direct connection of a facsimile transceiver or other ancillary apparatus to the telephone network is disclosed. The connection is made by removing the microphone from a telephone hand set and substituting therefor a microphone. Conductors are interposed between the microphone and the contacts within the hand set to enable connection of a facsimile transmitter or other ancillary equipment thereto while the telephone remains normally useable even after this modification. The modification which can be performed without tools and in a very short time, thus enabling ready connection of facsimile equipment without the use of an acoustic coupler even when the telephone is not connected to the telephone network by a means of a standard jack or plug.
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: July 27, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventor: Douglas R. Chester