Granted Patent
Utility
US 6,644,640 · App. 10/060,703
Quick connect/disconnect workpiece transfer unit
Inventors:
Aaron Thomas Russick, Steven M Sunday, Larry Richard Erdman, Jeffrey Boyd Grimshaw, Daniel D. Minor
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Jan 30, 2002
Inventors
Aaron Thomas Russick
Steven M Sunday
Larry Richard Erdman
Jeffrey Boyd Grimshaw
Daniel D. Minor
Assignee (at issue)
Hayes Lemmerz International, 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.