Granted Patent
Utility
US 6,204,473 · App. 09/302,279
Laser-equipped machine tool cutting head with pressurized counterbalance
Inventor:
John C. Legge
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Apr 30, 1999
Inventor
John C. Legge
Assignee (at issue)
W.A. Whitney Co.
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.