Granted Patent
Utility
US 5,735,923 · App. 08/838,323
Method of and apparatus for cooling and tempering a glass plate
Inventor:
Katsumi Hisaeda
Patented Case
View Patent ↗
Granted: Apr 7, 1998
Filed: Apr 8, 1997
Inventor
Katsumi Hisaeda
Assignee (at issue)
ASAHI GLASS CO., 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.