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Trademark Assignment Assignor Details

Assignor Name : DOWELL SCHLUMBERGER INCORPORATED

Total Assignments: 6

Assignment: 1

Reel/Frame:	1114/0308			Pages:	4
		Recorded:	03/07/1994
Conveyance:	ASSIGNS THE ENTIRE INTEREST AND THE GOODWILL

Assignor

DOWELL SCHLUMBERGER INCORPORATED

Exec Dt:	12/14/1993
Entity Type:	CORPORATION
Citizenship:	DELAWARE

Assignee

HYDROCHEM INDUSTRIAL SERVICES, INC.

1145 HIGHWAY 90-A

MISSOURI CITY, TEXAS 77489

Entity Type:	CORPORATION
Citizenship:	DELAWARE

Properties

	Ser. #	Reg. #		Ser. #	Reg. #		Ser. #	Reg. #
	73689163	1540872		73720780	1522916		73790448	1596802

Correspondence name and address
	MICHAEL P. STEINDLER
	CSSELL & STONE, L.L.P.
	5956 SHERRY LANE
	SUITE 1415
	DALLAS, TEXAS 75225

Assignment: 2

Reel/Frame:	1117/0487			Pages:	4
		Recorded:	03/07/1994
Conveyance:	ASSIGNS THE ENTIRE INTEREST AND THE GOODWILL

Assignor

DOWELL SCHLUMBERGER INCORPORATED

Exec Dt:	12/14/1993
Entity Type:	CORPORATION
Citizenship:	DELAWARE

Assignee

HYDROCHEM INDUSTRIAL SERVICES, INC.

1145 HIGHWAY 90-A

MISSOURI CITY, TEXAS 77489

Entity Type:	CORPORATION
Citizenship:	DELAWARE

Properties

	Ser. #	Reg. #		Ser. #	Reg. #		Ser. #	Reg. #
	71640490	578635		72163615	771608		72345314	899493

Correspondence name and address
	CASSELL & STONE, L.L.P.
	MICHAEL P. STEINDLER
	5956 SHERRY LANE, SUITE 1415
	DALLAS, TEXAS 75225

Assignment: 3

Reel/Frame:	1179/0175			Pages:	4
		Recorded:	06/20/1994
Conveyance:	ASSIGNS THE ENTIRE INTEREST AND THE GOODWILL

Assignor

DOWELL SCHLUMBERGER INCORPORATED

Exec Dt:	12/14/1993
Entity Type:	CORPORATION
Citizenship:	DELAWARE

Assignee

HYDROCHEM INDUSTRIAL SERVICES, INC.

1145 HIGHWAY 90-A, MISSOURI CITY, TX 77489

Entity Type:	CORPORATION
Citizenship:	DELAWARE

Properties

	Ser. #	Reg. #		Ser. #	Reg. #		Ser. #	Reg. #
	71640490	578635		72163615	771608		72345314	899493

Correspondence name and address
	WALTER R. BROOKHART
	BROWNING, BUSHMAN, ANDERSON & BROOKHART
	5718 WESTHEIMER, STE. 1800
	HOUSTON, TX 77057

Assignment: 4

Reel/Frame:	1179/0179			Pages:	4
		Recorded:	06/20/1994
Conveyance:	ASSIGNS THE ENTIRE INTEREST AND THE GOODWILL

Assignor

DOWELL SCHLUMBERGER INCORPORATED

Exec Dt:	12/14/1993
Entity Type:	CORPORATION
Citizenship:	DELAWARE

Assignee

HYDROCHEM INDUSTRIAL SERVICES, INC.

1145 HIGHWAY 90-A, MISSOURI CITY, TX 77489

Entity Type:	CORPORATION
Citizenship:	DELAWARE

Properties

	Ser. #	Reg. #		Ser. #	Reg. #		Ser. #	Reg. #
	73689163	1540872		73720780	1522916		73790448	1596802

Correspondence name and address
	WALTER R. BROOKHART
	BROWNING, BUSHMAN, ANDERSON & BROOKHART
	5718 WESTHEIMER, STE. 1800
	HOUSTON, TX 77057

Assignment: 5

Reel/Frame:	5497/0411	View Recorded Assignment		Pages:	8
		Recorded:	04/14/2015
Attorney Dkt #:	STC-INVERTAFRAC
Conveyance:	CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF THE CONVEYING PARTY AND THE MERGER DOCUMENTS PREVIOUSLY RECORDED ON REEL 003722 FRAME 0173. ASSIGNOR(S) HEREBY CONFIRMS THE NAME OF CONVEYING PARTY WAS DOWELL SCHLUMBERGER SAH, INC.

Assignor

DOWELL SCHLUMBERGER INCORPORATED

Exec Dt:	12/22/1994
Entity Type:	CORPORATION
Citizenship:	DELAWARE

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION

300 SCHLUMBERGER DRIVE

SUGAR LAND, TEXAS 77478

Entity Type:	CORPORATION
Citizenship:	TEXAS

Properties

Ser. #	Reg. #	Ser. #	Reg. #	Ser. #	Reg. #	Ser. #	Reg. #	Ser. #	Reg. #
72083867	728732	72175644	787692	72178426	784232	72178427	788033	72195075	792448
72195076	796205	72232821	816469	72252553	839748	72253859	839315	73452718	1302068

Correspondence name and address
	BOULWARE & VALOIR
	THREE RIVERWAY, SUITE 950
	HOUSTON, TX 77056

Assignment: 6

Reel/Frame:	2288/0962	View Recorded Assignment		Pages:	5
		Recorded:	04/20/2001
Conveyance:	MERGER

Assignor

DOWELL SCHLUMBERGER INCORPORATED

Exec Dt:	12/31/1994
Entity Type:	CORPORATION
Citizenship:	DELAWARE

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION

110 SCHLUMBERGER DRIVE, MD-1

SUGAR LAND, TEXAS 77478

Entity Type:	CORPORATION
Citizenship:	TEXAS

Properties

	Ser. #	Reg. #		Ser. #	Reg. #		Ser. #	Reg. #		Ser. #	Reg. #		Ser. #	Reg. #
	72083868	714829		72083869	714507		72341448	914861		72342961	906453		73258171	1170235

Correspondence name and address
	WISNER & ASSOCIATES
	MARK R. WISNER
	2925 BRIARPARK, SUITE 930
	HOUSTON, TX 77042-3728

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