Granted Patent
Utility
US 6,698,712 · App. 10/137,219
Ball valve assembly
Inventors:
Lionel J. Milberger, Larry E. Reimert, Jason McCanna, Xhemal Kaculi
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: May 2, 2002
Inventors
Lionel J. Milberger
Larry E. Reimert
Jason McCanna
Xhemal Kaculi
Assignee (at issue)
Dril-Quip, Inc.
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.