Granted Patent
Utility
US 4,388,525 · App. 06/233,347
Precision optical spacers for image sensor filters
Inventor:
William S. Phy
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Feb 11, 1981
Inventor
William S. Phy
Assignee (at issue)
Fairchild Camera & Instrument Corp.
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.