Granted Patent
Utility
US 4,645,350 · App. 06/763,700
Densitometer
Inventors:
Markus Weidmann, Hans Ott, Wilhelm Koch
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Aug 8, 1985
Inventors
Markus Weidmann
Hans Ott
Wilhelm Koch
Assignee (at issue)
Gretag Aktiengesellschaft
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.