Granted Patent
Utility
US 6,710,487 · App. 09/758,078
Rotary device with matched expansion ceramic bearings
Inventor:
David C. Brown
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Jan 10, 2001
Inventor
David C. Brown
Assignee (at issue)
GSI LUMONICS CORPORATION
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.