Granted Patent
Utility
US 5,089,301 · App. 07/456,965
Solution for the activating of electrically nonconductive substrate surfaces and method of preparing the said solution
Inventors:
Holger Kistrup, Otwin Imhof
Patented Case
View Patent ↗
Granted: Feb 18, 1992
Filed: Dec 26, 1989
Inventors
Holger Kistrup
Otwin Imhof
Assignee (at issue)
MERCEDES-BENZ GROUP AG
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.