Granted Patent
Utility
US 4,729,658 · App. 06/871,056
Very wide spectral coverage grating spectrometer
Inventor:
Sherman K. Poultney
Patented Case
View Patent ↗
Granted: Mar 8, 1988
Filed: Jun 5, 1986
Inventor
Sherman K. Poultney
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.