Granted Patent
Utility
US 4,160,231 · App. 05/352,820
Low frequency dipole hydrophone transducer
Inventors:
John H. Thompson, George R. Douglas, Charles R. Wilson
Patented Case
View Patent ↗
Granted: Jul 3, 1979
Filed: Apr 19, 1973
Inventors
John H. Thompson
George R. Douglas
Charles R. Wilson
Assignee (at issue)
Westinghouse Electric Company LLC
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.