Granted Patent
Utility
US 4,728,951 · App. 06/835,446
Vertical windshear detection for aircraft
Inventors:
David August Johnson, Terry L. Zweifel
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Feb 28, 1986
Inventors
David August Johnson
Terry L. Zweifel
Assignee (at issue)
Honeywell Limited
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.