Granted Patent
Utility
US 4,259,734 · App. 06/106,226
Fine-resolution, water-depth measuring system
Inventor:
Norman A. Harmel
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: Dec 21, 1979
Inventor
Norman A. Harmel
Assignee (at issue)
Western Electric Company, 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.