Granted Patent
Utility
US 4,272,209 · App. 05/880,216
Anti-vandalism nut assembly
Inventor:
Daniel A. Joseph
Patented Case
View Patent ↗
Granted: Jun 9, 1981
Filed: Feb 22, 1978
Inventor
Daniel A. Joseph
Assignee (at issue)
Roland C. Zinn
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.