Granted Patent
Utility
US 6,151,939 · App. 08/917,330
Can shaping apparatus
Inventors:
Joseph Hanna, Otis Willoughby, Greg Robinson
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: Aug 25, 1997
Inventors
Joseph Hanna
Otis Willoughby
Greg Robinson
Assignee (at issue)
Delaware Capital Formation, 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.