Patent Assignment
Reel/Frame 004552/0573
Assignment of Assignors Interest.
Recorded: 1986-05-22
Pages: 1
Assignee
ARROW OIL TOOLS, INC., A DIVISION OF MASCO INDUSTRIES, INC.
A CORP. OF DE., TULSA, OKLAHOMA
Covered Property
(1)
Sealing Packer
Patent:
4,640,351 →
Application:
06/783,207 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Nov 18, 1993
From: ARROW OIL TOOLS, INC.
To: LINDSEY COMPLETION SYSTEMS, INC.
Reel/Frame 006777/0360 →
Change of Name
Dec 3, 1993
From: LINDSEY COMPLETION SYSTEMS, INC.
To: MASX ENERGY SERVICES GROUP, INC.
Reel/Frame 006783/0444 →
Change of Name
Nov 29, 1996
From: TOTAL ENERGY SERVICES COMPANY
To: ENTERRA PETROLEUM EQUIPMENT GROUP, INC.
Reel/Frame 008239/0795 →
Assignment of Assignor's Interest
Jan 23, 1997
From: ENTERRA PETROLEUM EQUIPMENT GROUP, INC.
To: EVI ARROW, INC.
Reel/Frame 008321/0001 →