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Patent Assignment Abstract of Title
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Total Assignments: 6
Patent #:
4422477
Issue Dt:
12/27/1983
Application #:
06238713
Filing Dt:
02/27/1981
Inventors:
ROBERT H. WITTMAN, DAVID E. ADKINS, RONNIE E. HAWS
Title:
PRESSURE ENERGIZED PIPELINE PLUG
Assignment: 1
Reel/Frame:
004194/0240Recorded: 09/28/1983Pages: 4
Conveyance:
MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 22, 1981 DELAWARE
Assignor:
HYDROTECH-HUGHES, INC
Exec Dt:
09/14/1972
Assignee:
HUGHES TOOL COMPANY
A CORP OF DE
TEXAS
Correspondent:
ROBERT A. FELSMAN
HUGHES TOOL CO.
P. O. BOX 2539
HOUSTON, TX 77001
Assignment: 2
Reel/Frame:
004173/0382Recorded: 09/28/1983Pages: 3
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors:
WITTMAN, ROBERT H.
Exec Dt:
09/03/1981
ADKINS, DAVID E.
Exec Dt:
09/03/1981
HAWS, RONNIE E.
Exec Dt:
09/23/1981
Assignee:
HYDROTECH-HUGHES, INC., 11800 CHARLES ST., HOUSTON, TX, A CORP. OF DE
TEXAS
Correspondent:
ROBERT A. FELSMAN
HUGHES TOOL CO.
P. O. BOX 2539
HOUSTON, TX 77001
Assignment: 3
Reel/Frame:
004404/0162Recorded: 05/24/1985Pages: 18
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor:
CAL DIVE INTERNATIONAL, INC
Exec Dt:
01/02/1985
Assignee:
HYDROTECH SYSTEMS INC., A MN CORP
4959 WEST 34TH STREET, SUITE 100
HOUSTON, TEXAS 77092
Correspondent:
KINNEY & LANGE
SUITE 1500
625 FOURTH AVENUE SOUTH
MINNEAPOLIS MN 55415-1659
Assignment: 4
Reel/Frame:
005075/0578Recorded: 03/27/1989Pages: 16
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor:
HYDROTECH SYSTEMS, INC., A MN CORP.
Exec Dt:
08/12/1988
Assignee:
HSI ACQUISITIONS, INC.
Correspondent:
HUGHES, WATTERS & ASKANASE
ONE ALLEN CENTER, SUITE 1600
500 DALLAS STREET
HOUSTON, TEXAS 77002
Assignment: 5
Reel/Frame:
005199/0337Recorded: 12/21/1989Pages: 52
Conveyance:
SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
HSI ACQUISITIONS, INC.
Exec Dt:
12/12/1989
Assignee:
BAKER HUGHES INCORPORATED, A CORP. OF DE
3900 ESSEX LANE, STE 1200,
HOUSTON,, TEXAS 77027
Correspondent:
FULBRIGHT & JAWORSKI
1301 MCKINNEY
HOUSTON, TX 77010
Assignment: 6
Reel/Frame:
004348/0009Recorded: 01/07/1985Pages: 18
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO CONDITIONS RECITED (SEE DOCUMENT FOR DETAILS)
Assignor:
HUGHES TOOL COMPANY
Exec Dt:
00/00/0000
Assignee:
CAL DRIVE INTERNATIONAL, INC., 115 INDUSTRIAL PARKWAY, LAFAYETTE, LA. 70505, A MN CORP.
Correspondent:
KINNEY & LANGE
SUITE 1500, 625 FOURTH AVE SO.
MINNEAPOLIS, MN 55415-1659

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