Granted Patent
Utility
US 4,325,673 · App. 06/129,042
Variable vane seal
Inventor:
Beuford C. Hall, Jr.
Patented Case
View Patent ↗
Granted: Apr 20, 1982
Filed: Mar 10, 1980
Inventor
Beuford C. Hall, Jr.
Assignee (at issue)
General Motors 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.