Granted Patent
Utility
US 4,630,909 · App. 06/701,415
Apparatus for measuring the position of a light source disposed inside a lighthouse
Inventors:
Dieter Forker, Joachim Hassler, Bernhard Lau, Rolf Schmidt
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Feb 14, 1985
Inventors
Dieter Forker
Joachim Hassler
Bernhard Lau
Rolf Schmidt
Assignee (at issue)
Standard Elektrik Lorenz AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.