Granted Patent
Utility
US 4,428,519 · App. 06/396,020
Device for tensioning a data carrier which is moved by feed tractors
Inventors:
Helmut Reichl, Richard Hartl, Christoph Newinger
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Jul 7, 1982
Inventors
Helmut Reichl
Richard Hartl
Christoph Newinger
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.