Granted Patent
Utility
US 6,722,668 · App. 10/357,789
Chuck having quick change mechanism
Inventors:
Mark S. Huggins, Stephen W. Steadings, Daijiro Nakamura
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Feb 4, 2003
Inventors
Mark S. Huggins
Stephen W. Steadings
Daijiro Nakamura
Assignee (at issue)
Power Tool Holders Incorporated
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.