Granted Patent
Utility
US 6,402,160 · App. 09/507,575
Chuck with improved bearing
Inventors:
Robert A. Grogan, William H. Aultman, Gary L. Young, J. Larry Wilson, Mark S. Huggins
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Feb 18, 2000
Inventors
Robert A. Grogan
William H. Aultman
Gary L. Young
J. Larry Wilson
Mark S. Huggins
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.