Granted Patent
Utility
US 6,655,699 · App. 10/044,101
Six jaw equalizing chuck
Inventor:
Thomas M. Grobbel
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Jan 11, 2002
Inventor
Thomas M. Grobbel
Assignee (at issue)
ILLINOIS TOOL WORKS 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.