Granted Patent
Utility
US 6,457,916 · App. 09/713,579
Locking quick-change chuck assembly
Inventor:
James L. Wienhold
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: Nov 15, 2000
Inventor
James L. Wienhold
Assignee (at issue)
INSTY-BIT, LLC
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.