Granted Patent
Utility
US 5,471,771 · App. 08/258,048
Method and apparatus for cooling chain type diggers
Inventor:
Jerry F. Gilbert
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Jun 10, 1994
Inventor
Jerry F. Gilbert
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.