Granted Patent
Utility
US 4,893,931 · App. 07/166,492
Method for the detection of polarization couplings in a birefringent optical system and application of this method to the assembling of the components of an optical system
Inventors:
Herve Lefevre, Jean P. Bettini, Serge Botti
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Mar 10, 1988
Inventors
Herve Lefevre
Jean P. Bettini
Serge Botti
Assignee (at issue)
Thomson-CSF
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.