Granted Patent
Utility
US 4,477,952 · App. 06/481,834
Piezoelectric crystal electrodes and method of manufacture
Inventors:
Robert J. Crescenzi, John U. Daniels, Jr., Gerald E. Roberts
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Apr 4, 1983
Inventors
Robert J. Crescenzi
John U. Daniels, Jr.
Gerald E. Roberts
Assignee (at issue)
General Electric 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.