Granted Patent
Utility
US 4,906,534 · App. 07/283,315
Composite aluminum thin plates for brazing and method for preparing same
Inventors:
Yoichiro Bekki, Shigenori Asami, Kazunori Ishikawa, Takeyoshi Doko, Eiji Itaya
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Dec 9, 1988
Inventors
Yoichiro Bekki
Shigenori Asami
Kazunori Ishikawa
Takeyoshi Doko
Eiji Itaya
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.