Granted Patent
Utility
US 5,369,876 · App. 08/142,433
Apparatus for inserting U-shaped tubes in a heat exchanger core
Inventor:
Derek O'Grady
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Nov 22, 1993
Inventor
Derek O'Grady
Assignee (at issue)
Ford Motor Company
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.