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Form SC 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0000902219-06-001293
Filing Date
2006-07-10
Accepted
2006-07-10 14:22:14
Documents
1

Document Format Files

Seq Description Document Type Size
1 SEC FILING sec_filing.htm SC 13G 17723
  Complete submission text file 0000902219-06-001293.txt   19646
Mailing Address 75 STATE STREET BOSTON MA 02109
Business Address 75 STATE STREET BOSTON MA 02109 6179515000
WELLINGTON MANAGEMENT CO LLP (Filed by) CIK: 0000902219 (see all company filings)

IRS No.: 042683227 | State of Incorp.: MA | Fiscal Year End: 1231
Type: SC 13G
SIC: 0000

Mailing Address 2911 SCR 1260 MIDLAND TX 79706
Business Address 2911 SCR 1260 MIDLAND TX 79706 9155633974
NATURAL GAS SERVICES GROUP INC (Subject) CIK: 0001084991 (see all company filings)

IRS No.: 752811855
Type: SC 13G | Act: 34 | File No.: 005-78868 | Film No.: 06953490
SIC: 1389 Oil & Gas Field Services, NEC