Granted Patent
Utility
US 4,341,100 · App. 06/053,133
Portable certificate magazine
Inventor:
Hermann Kohlhage
Patented Case
View Patent ↗
Granted: Jul 27, 1982
Filed: Jun 28, 1979
Inventor
Hermann Kohlhage
Assignee (at issue)
Nixdorf Computer 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.