Granted Patent
Utility
US 4,413,886 · App. 06/228,599
Optical switch
Inventors:
Joachim Lauckner, Felix Lutz, Gerhard Seibold, Gerhard Wessel, Hans Volz
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: Jan 26, 1981
Inventors
Joachim Lauckner
Felix Lutz
Gerhard Seibold
Gerhard Wessel
Hans Volz
Assignee (at issue)
International Standard Electric Corporation
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.