Granted Patent
Utility
US 5,190,791 · App. 07/779,253
Infrared radiation process for a high contrast in the natural grain of a naturally pale wood
Inventors:
Jurgen Gunter, Siegfried Kohler, Siegfried Lang, Luise Schellhorn, Erwin Lutz
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Oct 18, 1991
Inventors
Jurgen Gunter
Siegfried Kohler
Siegfried Lang
Luise Schellhorn
Erwin Lutz
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.