Granted Patent
Utility
US 4,518,854 · App. 06/389,330
Combined shearing interferometer and Hartmann wavefront sensor
Inventor:
Richard A. Hutchin
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Jun 17, 1982
Inventor
Richard A. Hutchin
Assignee (at issue)
I-TEK, 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.