Granted Patent
Utility
US 6,553,746 · App. 09/692,921
Device for automatically changing reels of film
Inventor:
Mauro Cere′
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Oct 20, 2000
Inventor
Mauro Cere′
Assignee (at issue)
AETNA GROUP 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.