Granted Patent
Utility
US 5,171,967 · App. 07/671,865
Stud-welding circuit with a plurality of outputs
Inventor:
Bernd Schwiete
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Apr 4, 1991
Inventor
Bernd Schwiete
Assignee (at issue)
TRW Nelson Bolzenschweiss-Technik GmbH & Co. KG
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.