Granted Patent
Utility
US 4,989,775 · App. 07/285,054
Method for brazing aluminum components
Inventors:
Yoshifumi Shimajiri, Masakazu Furuta, Akio Tani
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Dec 14, 1988
Inventors
Yoshifumi Shimajiri
Masakazu Furuta
Akio Tani
Assignee (at issue)
Showa Aluminum Corp.
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.