Granted Patent
Utility
US 5,837,388 · App. 08/692,441
Aluminum alloy solder material, its manufacturing method, brazing sheet using this material, and method of manufacturing aluminum alloy heat exchanger using this sheet
Inventors:
Takeyoshi Doko, Koji Okada
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Aug 5, 1996
Inventors
Takeyoshi Doko
Koji Okada
Assignee (at issue)
FURUKAWA ELECTRIC 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.