Granted Patent
Utility
US 5,296,913 · App. 07/958,211
Polarimeter re-calibration method and apparatus
Inventor:
Brian L. Heffner
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Oct 8, 1992
Inventor
Brian L. Heffner
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.