Patents by Inventor Marius F. Fierst van Wijnandsbergen

Marius F. Fierst van Wijnandsbergen 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).

  • Polyphase isolator switches
    Patent number: 4184058
    Abstract: A polyphase, e.g. three phase, isolator switch, of which the movable contact members of all phases extend through a common bushing insulator mounted in a partition between two compartments for rotation about an axis normal to said partition and are simultaneously moved to make and break the circuit by rotation of said insulator.
    Type: Grant
    Filed: July 12, 1977
    Date of Patent: January 15, 1980
    Assignee: Coq B.V.
    Inventors: Gijsbert W. Irik, Pieter Marien, Marius F. Fierst van Wijnandsbergen