Granted Patent
Utility
US 4,747,678 · App. 06/942,899
Optical relay system with magnification
Inventors:
David Shafer, Abe Offner, Rama N. Singh
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: Dec 17, 1986
Inventors
David Shafer
Abe Offner
Rama N. Singh
Assignee (at issue)
PerkinElmer, 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.