Granted Patent
Utility
US 6,745,640 · App. 10/146,379
Method for manufacturing a worm shaft for a gearbox and gearbox incorporating same
Inventor:
Chuong Nguyen
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: May 15, 2002
Inventor
Chuong Nguyen
Assignee (at issue)
Reliance Electric Technologies, 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.