Granted Patent
Utility
US 5,871,173 · App. 08/730,376
Drag-producing aerodynamic device
Inventors:
Stephen Frank, David K. Hawkins
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Oct 15, 1996
Inventors
Stephen Frank
David K. Hawkins
Assignee (at issue)
GEC-Marconi Ltd.
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.