Granted Patent
Utility
US 5,012,434 · App. 07/378,508
Apparatus and method for selective rotation of data printed by a matrix printer
Inventors:
Kurt Zietlow, Ernst Engst
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Jul 12, 1989
Inventors
Kurt Zietlow
Ernst Engst
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.