Patent Assignment
Reel/Frame 004970/0355
Assignment of Assignors Interest.
Recorded: 1988-10-21
Pages: 1
Assignor
LANGER, FRIEDRICH H.
Executed: 1988-10-20
Assignee
WEATHERFORD U.S., INC., A CORP. OF DE
1360 POST OAK BOULEVARD, STE. 1000, HOUSTON, TEXAS, 77227
Covered Property
(1)
Float Equipment Including Float Collars and Modular Plugs for Well Operations
Patent:
4,979,562 →
Application:
07/261,385 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.