Granted Patent
Utility
US 4,613,749 · App. 06/598,438
Pattern tracer using matrix sensor
Inventor:
Enn Vali
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Apr 9, 1984
Inventor
Enn Vali
Assignee (at issue)
Westinghouse Canada 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.