Granted Patent
Utility
US 6,028,656 · App. 08/947,966
Optical polarization switch and method of using same
Inventors:
Carl F. Buhrer, Peter J. Miller
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Oct 9, 1997
Inventors
Carl F. Buhrer
Peter J. Miller
Assignee (at issue)
Cambridge Research & Instrumentation, Inc.
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.