Granted Patent
Utility
US 4,234,198 · App. 05/731,605
Water seal assembly for engines
Inventors:
Gary Martin, James C. Smith
Patented Case
View Patent ↗
Granted: Nov 18, 1980
Filed: Oct 12, 1976
Inventors
Gary Martin
James C. Smith
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.