Granted Patent
Utility
US 4,687,913 · App. 06/801,544
Microscope autofocus system
Inventor:
Richard J. Chaban
Patented Case
View Patent ↗
Granted: Aug 18, 1987
Filed: Nov 25, 1985
Inventor
Richard J. Chaban
Assignee (at issue)
Warner Lambert Technologies, 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.