Granted Patent
Utility
US 4,326,662 · App. 06/183,355
Process of ultrasonically soldering drawn aluminum tubing products
Inventor:
Bruce Edward Anderson
Patented Case
View Patent ↗
Granted: Apr 27, 1982
Filed: Sep 2, 1980
Inventor
Bruce Edward Anderson
Assignee (at issue)
Aluminum Company of America
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.