Granted Patent
Utility
US 3,947,240 · App. 05/520,182
Method and apparatus for generating a vapor for soldering fusing or brazing articles
Inventor:
Robert C. Pfahl, Jr.
Patented Case
View Patent ↗
Granted: Mar 30, 1976
Filed: Nov 1, 1974
Inventor
Robert C. Pfahl, Jr.
Assignee (at issue)
Western Electric Company, Inc.
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.