Granted Patent
Utility
US 4,893,853 · App. 07/300,895
Padlock-type security seal
Inventor:
Richard S. Guiler
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Jan 24, 1989
Inventor
Richard S. Guiler
Assignee (at issue)
E.J. BROOKS COMPANY
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.