Granted Patent
Utility
US 4,852,489 · App. 07/122,127
Self-inking stamping device
Inventors:
Alexander Wall, Leonard H. Sculler
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Nov 18, 1987
Inventors
Alexander Wall
Leonard H. Sculler
Assignee (at issue)
M&R Marking Systems, 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.