Granted Patent
Utility
US 4,379,623 · App. 06/144,478
40x Microscope objective
Inventor:
Edward B. Rybicki
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Apr 28, 1980
Inventor
Edward B. Rybicki
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.