Granted Patent
Utility
US 4,746,796 · App. 06/920,711
Corotron wire cassette for electrophotographic printer or copier devices
Inventor:
Karl Heigl
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Oct 20, 1986
Inventor
Karl Heigl
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.