Granted Patent
Utility
US 6,750,417 · App. 10/204,119
Stud welding head
Inventors:
Jurgen Madsak, Ulrich Citrich
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Nov 5, 2002
Inventors
Jurgen Madsak
Ulrich Citrich
Assignee (at issue)
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.