Granted Patent
Utility
US 6,834,757 · App. 09/832,649
Roller drive unit
Inventors:
Richard Holzner, Stefan Michailov, Matthias Urch
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Apr 11, 2001
Inventors
Richard Holzner
Stefan Michailov
Matthias Urch
Assignee (at issue)
TELAIR INTERNATIONAL GMBH
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.