Granted Patent
Utility
US 6,389,939 · App. 08/297,257
Multiple-spindle bar machine
Inventors:
Kirt M. Babuder, Thomas M. Bender, Douglas A. Joseph, L. Joseph Stupica
Patented Case
View Patent ↗
Granted: May 21, 2002
Filed: Aug 26, 1994
Inventors
Kirt M. Babuder
Thomas M. Bender
Douglas A. Joseph
L. Joseph Stupica
Assignee (at issue)
DeVlieg Bullard II, 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.