Granted Patent
Utility
US 6,473,170 · App. 09/766,201
Linear optical sensor for a closure
Inventor:
Thomas Schäfer
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Jan 19, 2001
Inventor
Thomas Schäfer
Assignee (at issue)
White Cap, 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.