Granted Patent
Utility
US 6,160,620 · App. 09/384,758
Optical contact sensor
Inventor:
John Edward Danek
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Aug 27, 1999
Inventor
John Edward Danek
Assignee (at issue)
UNIVERSAL INSTRUMENTS 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.