Granted Patent
Utility
US 4,850,693 · App. 07/197,235
Compact portable diffraction moire interferometer
Inventors:
Vance A. Deason, Michael B. Ward
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: May 23, 1988
Inventors
Vance A. Deason
Michael B. Ward
Assignee (at issue)
United States Department of Energy
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.