Patent Assignment
Reel/Frame 053646/0459
Nunc Pro Tunc Assignment
Recorded: 2020-08-31
Pages: 11
Assignors
NELSON, JOHN E.
Executed: 2012-12-03
MALDONADO, OSCAR
Executed: 2020-08-26
WITWER, BRUCE J.
Executed: 2019-08-15
Assignee
DRIL-QUIP, INC.
6401 N. ELDRIDGE PARKWAY, HOUSTON, TEXAS, 77041
Covered Property
(1)
Improved Inner Drilling Riser Tie-Back Internal Connector
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.