Granted Patent
Utility
US 4,353,745 · App. 06/296,434
Cleaner for anti-graffiti system
Inventor:
Robert E. Ebbeler
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Aug 26, 1981
Inventor
Robert E. Ebbeler
Assignee (at issue)
Chemed Corporation
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.