Granted Patent
Utility
US 5,489,347 · App. 08/281,154
Aluminum alloy fin material for heat-exchanger
Inventors:
Fujio Himuro, Takeyoshi Doko
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Jul 27, 1994
Inventors
Fujio Himuro
Takeyoshi Doko
Assignees (at issue)
FURUKAWA ELECTRIC CO., LTD.
Nippondenso 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.