Granted Patent
Utility
US 5,988,697 · App. 08/881,656
Mechanism for uniting valve parts
Inventor:
Massimo Arosio
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Jun 24, 1997
Inventor
Massimo Arosio
Assignee (at issue)
OMBA S.r.l.
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.