Patents by Inventor Alfred Stockinger

Alfred Stockinger 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).

  • Optical surveying apparatus, such as transit, with artificial light scale illuminating system
    Patent number: 3958885
    Abstract: A light emitting diode is located beneath a glass scale carrier, one for each scale (azimuth and elevation), emitting essentially monochromatic light, which penetrates through the glass scale; the scale is observed through an optical system. The optical system for viewing of the scale is located on a carrier secured in the telescope housing; the light emitting diodes are powered by a battery secured in the housing, which energizes a timer, such as R/C circuit settable for normal observation times, for example about thirty seconds.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: May 25, 1976
    Assignee: Wild Heerbrugg Aktiengesellschaft
    Inventors: Alfred Stockinger, Joachim Mainka