Granted Patent
Utility
US 6,692,850 · App. 09/801,376
Controlled stress optical coatings for membranes
Inventor:
Christopher Cook
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Mar 7, 2001
Inventor
Christopher Cook
Assignee (at issue)
Axsun Technologies, 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.