Granted Patent
Utility
US 6,250,754 · App. 09/295,383
Duplex printer
Inventor:
Giuseppe Bortolotti
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Apr 21, 1999
Inventor
Giuseppe Bortolotti
Assignee (at issue)
Olivetti Lexikon S.p.A.
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.