Granted Patent
Utility
US 4,848,644 · App. 07/220,761
Drag soldering method and apparatus for printed wiring boards
Inventor:
Ben Cunningham
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Jul 13, 1988
Inventor
Ben Cunningham
Assignee (at issue)
Westinghouse Electric Company 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.