Granted Patent
Utility
US 6,108,278 · App. 09/393,878
Annual calendar mechanism for clockwork movement
Inventor:
Marco Rochat
Patented Case
View Patent ↗
Granted: Aug 22, 2000
Filed: Sep 10, 1999
Inventor
Marco Rochat
Assignee (at issue)
Frederic Piguet S.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.