Granted Patent
Utility
US 5,172,849 · App. 07/765,341
Method and apparatus for convection brazing of aluminum heat exchangers
Inventors:
Brian L. Barten, Gary A. Halstead
Patented Case
View Patent ↗
Granted: Dec 22, 1992
Filed: Sep 25, 1991
Inventors
Brian L. Barten
Gary A. Halstead
Assignee (at issue)
General Motors LLC
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.