Granted Patent
Utility
US 4,296,323 · App. 06/128,932
Secondary emission mass spectrometer mechanism to be used with other instrumentation
Inventor:
Robert L. Gerlach
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Mar 10, 1980
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.