Granted Patent
Utility
US 4,846,550 · App. 07/001,267
Optical wedges used in beam expander for divergence control of laser
Inventors:
Richard F. Schuma, Edward A. Teppo
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Jan 7, 1987
Inventors
Richard F. Schuma
Edward A. Teppo
Assignee (at issue)
AlliedSignal, 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.