Patents by Inventor M. Martin Creswick

M. Martin Creswick 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).

  • Transponder and interrogator
    Patent number: 4931788
    Abstract: A transponder, comprising means for receiving a periodically modulated interrogating signal; means for demodulating the received signal to produce a periodic baseband signal; and means for transmitting data at a rate determined by the periodicity of the baseband signal.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: June 5, 1990
    Assignee: Meridian Micro-Systems Ltd.
    Inventor: M. Martin Creswick