Granted Patent
Utility
US 5,892,314 · App. 08/802,549
Piezoelectric circuit
Inventors:
Frank Everett Sager, William Claude Robertson, Christopher J. Matice
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Feb 18, 1997
Inventors
Frank Everett Sager
William Claude Robertson
Christopher J. Matice
Assignees (at issue)
Oceaneering International, Inc.
Stress Engineering Services, 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.