Granted Patent
Utility
US 5,234,759 · App. 07/775,964
Brazing sheet comprising an Al--Mg--Si alloy brazing material
Inventors:
Yoshihito Inabayashi, Takeyoshi Doko, Kazunori Ishikawa
Patented Case
View Patent ↗
Granted: Aug 10, 1993
Filed: Oct 31, 1991
Inventors
Yoshihito Inabayashi
Takeyoshi Doko
Kazunori Ishikawa
Assignee (at issue)
Furukawa Aluminum 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.