Granted Patent
Utility
US 4,979,896 · App. 07/426,292
Cooling device of heating furnace in thermal analyzer
Inventor:
Ryoichi Kinoshita
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Oct 25, 1989
Inventor
Ryoichi Kinoshita
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.