Granted Patent
Utility
US 4,557,072 · App. 06/586,795
Door arrangement for the control panel of an apparatus
Inventors:
Hubert Rittmeister, Karl-Heinz Seroka
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Mar 6, 1984
Inventors
Hubert Rittmeister
Karl-Heinz Seroka
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.