Granted Patent
Utility
US 6,400,512 · App. 09/724,659
Refractive/reflective optical element multiple beam spacer
Inventor:
Michael Hildebrandt
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Nov 28, 2000
Inventor
Michael Hildebrandt
Assignee (at issue)
Xerox 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.