Granted Patent
Utility
US 4,206,639 · App. 05/854,782
Doppler acoustic wind sensor
Inventor:
Martin Balser
Patented Case
View Patent ↗
Granted: Jun 10, 1980
Filed: Nov 25, 1977
Inventor
Martin Balser
Assignee (at issue)
Xonics, 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.