Patents by Inventor TsaiFa Chang

TsaiFa Chang 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).

  • Selecting interface device for facsimile apparatuses
    Patent number: 4802204
    Abstract: The present invention discloses a selecting device for interfacing between a telephone line and two facsimile apparatuses and comprises a telephone line; terminal adapted to be coupled with the telephone line; two facsimile apparatus terminals adapted to be coupled with the two facsimile apparatuses respectively; a loop selection circuit coupled with the telephone line terminal and the facsimile apparatus terminals; and means, coupled with the loop selection circuit, for controlling the loop selection circuit selectively to couple two of the telephone line terminal and the facsimile apparatus terminals with each other.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: January 31, 1989
    Assignee: Climax Technology Co., Ltd.
    Inventor: TsaiFa Chang