Granted Patent
Utility
US 4,388,804 · App. 06/293,556
Exhaust assembly for tractors
Inventor:
Richard W. Bushmeyer
Patented Case
View Patent ↗
Granted: Jun 21, 1983
Filed: Aug 17, 1981
Inventor
Richard W. Bushmeyer
Assignee (at issue)
J. I. Case 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.