Patents by Inventor David Sydney Widmer

David Sydney Widmer 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).

  • Radiation detecting system
    Patent number: 3993901
    Abstract: In a spectrophotometry system, apparatus for modulating radiation in fixed phase relationship with an oscillatory electric signal, comprising a radiation interrupting member connected to an armature torsionally mounted in a magnetic field generated from said oscillatory signal.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: November 23, 1976
    Assignee: Pye of Cambridge Ltd.
    Inventor: David Sydney Widmer