Granted Patent
Utility
US 4,940,197 · App. 07/308,712
Aircraft undercarriage unit
Inventor:
Peter M. H. Putnam
Patented Case
View Patent ↗
Granted: Jul 10, 1990
Filed: Feb 10, 1989
Inventor
Peter M. H. Putnam
Assignee (at issue)
British Aerospace Public Limited Co.
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.