Granted Patent
Utility
US 5,770,530 · App. 08/548,054
Protective layer, particularly anti-vandalism protective layer
Inventors:
Hans Nockemann, Bruno Schwarz
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Oct 25, 1995
Inventors
Hans Nockemann
Bruno Schwarz
Assignee (at issue)
Happich Farhzeug-und Industrieteile GmbH
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.