Granted Patent
Utility
US 6,076,488 · App. 09/065,111
Cooling device for a construction machine
Inventor:
Yoshinori Yamagishi
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: Apr 24, 1998
Inventor
Yoshinori Yamagishi
Assignee (at issue)
Shin Caterpillar Mitsubishi Ltd.
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.