Granted Patent
Utility
US 3,978,828 · App. 05/280,576
V-Type internal combustion engine
Inventor:
Robert Weber
Patented Case
View Patent ↗
Granted: Sep 7, 1976
Filed: Aug 14, 1972
Inventor
Robert Weber
Assignee (at issue)
Caterpillar Tractor 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.