Granted Patent
Utility
US 4,720,629 · App. 06/856,404
Pattern tracer with electronic kerf control with adjustably delayed sampling pulse
Inventor:
Robert E. Parker
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Apr 28, 1986
Inventor
Robert E. Parker
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.