IP Library › Assignment 012058/0638
Patent Assignment
Reel/Frame 012058/0638

Assignment of Assignor's Interest

Recorded: 2001-08-09 Pages: 4
Assignors
HAGEDOORN, A.L.
Executed: 2001-01-26
LAROO, H.A.
Executed: 2001-01-26
Assignee
INPUT/OUTPUT, INC.
12300 CHARLES E. SELECMAN DR., STAFFORD, TEXAS, 77477
Covered Property (1)
Double-Ended Geophone
Patent: 6,922,374 →
Application: 09/829,170 →
Publication: US 2002/0145942
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Agreement Nov 4, 2014
From: ION GEOPHYSICAL CORPORATION; I/O MARINE SYSTEMS, INC.; GX TECHNOLOGY CORPORATION; ION EXPLORATION PRODUCTS (U.S.A.), INC.
To: U. S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 034181/0779 →