Patents by Inventor Klaus Dieter Haas

Klaus Dieter Haas 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).

  • Light beam switch housing structure
    Patent number: 4021665
    Abstract: Light beam switch unit containing source and/or receiver in a pressure-tight housing with sealed-in lenses, cover and cable inlet.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: May 3, 1977
    Assignee: Erwin Sick GmbH Optik-Electronik
    Inventors: Klaus Dieter Haas, Manfred Sillmann