Granted Patent
Utility
US 4,257,686 · App. 05/970,055
Multiple layer piezoelectric wavefront modulator
Inventors:
Nedo P. Albertinetti, Ralph E. Aldrich
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: Dec 14, 1978
Inventors
Nedo P. Albertinetti
Ralph E. Aldrich
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.