Granted Patent
Utility
US 6,304,325 · App. 05/868,951
Variable shear A. C. interferometer
Inventors:
John W. Hardy, Joseph E. Lefebvre, Chris L. Koliopoulos
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Jan 12, 1978
Inventors
John W. Hardy
Joseph E. Lefebvre
Chris L. Koliopoulos
Assignee (at issue)
Raytheon Company
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.