Granted Patent
Utility
US 4,711,564 · App. 06/937,490
Mechanism for the drive of actuation elements movable in sealed regions of non-mechanical printer or copier means
Inventors:
Hubert Mugrauer, Ernst Puritscher, Franz Wittmann
Patented Case
View Patent ↗
Granted: Dec 8, 1987
Filed: Dec 3, 1986
Inventors
Hubert Mugrauer
Ernst Puritscher
Franz Wittmann
Assignee (at issue)
Siemens 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.