Granted Patent
Utility
US 4,810,880 · App. 07/058,437
Direct imaging monochromatic electron microscope
Inventor:
Robert L. Gerlach
Patented Case
View Patent ↗
Granted: Mar 7, 1989
Filed: Jun 5, 1987
Inventor
Robert L. Gerlach
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.