Granted Patent
Utility
US 6,029,949 · App. 08/422,795
High performance butterfly valve
Inventors:
Robert Joseph Brown, William John Mabery, Harold Gentry, Gerald Patrick McDermott
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Apr 17, 1995
Inventors
Robert Joseph Brown
William John Mabery
Harold Gentry
Gerald Patrick McDermott
Assignee (at issue)
Flowserve Holdings, 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.