Granted Patent
Utility
US 4,600,131 · App. 06/556,754
Pourout fitment/closure
Inventors:
William M. Roof, Dennis P. Blair
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: Nov 30, 1983
Inventors
William M. Roof
Dennis P. Blair
Assignee (at issue)
Thoroughbred Plastics Corp.
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.