Granted Patent
Utility
US 6,409,175 · App. 09/352,815
Expandable joint connector
Inventors:
M. Edward Evans, D. Scott Costa, James N. Brock
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Jul 13, 1999
Inventors
M. Edward Evans
D. Scott Costa
James N. Brock
Assignee (at issue)
GRANT PRIDECO, 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.