Granted Patent
Utility
US 5,023,664 · App. 07/331,665
Non-mechanical printer or copier means comprising an exposure means arranged in the development region
Inventors:
Rainer Koefferlein, Bernhard Schlageter, Erich Baier
Patented Case
View Patent ↗
Granted: Jun 11, 1991
Filed: Mar 22, 1989
Inventors
Rainer Koefferlein
Bernhard Schlageter
Erich Baier
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.