Granted Patent
Utility
US 4,969,766 · App. 07/311,143
Cap for marking instruments
Inventors:
George J. Nagle, Harry J. Lidle, Jr., Charles W. Dietterich
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Feb 15, 1989
Inventors
George J. Nagle
Harry J. Lidle, Jr.
Charles W. Dietterich
Assignee (at issue)
BINNEY & SMITH 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.