Granted Patent
Utility
US 4,378,161 · App. 06/174,645
Optical sensing system for determining the angular orientation of weft threads
Inventor:
Edward L. Maddox
Patented Case
View Patent ↗
Granted: Mar 29, 1983
Filed: Aug 1, 1980
Inventor
Edward L. Maddox
Assignee (at issue)
S W Industries
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.