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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000902219-01-500069
Filing Date
2001-11-09
Accepted
2001-11-09 00:00:00
Documents
1

Document Format Files

Seq Description Document Type Size
1 hp1.txt SC 13G/A 9320
  Complete submission text file 0000902219-01-500069.txt   11312
Mailing Address UTICA AT 21ST ST TULSA OK 74114
Business Address UTICA AT 21ST ST TULSA OK 74114 9187425531
HELMERICH & PAYNE INC (Subject) CIK: 0000046765 (see all company filings)

IRS No.: 730679879 | State of Incorp.: DE | Fiscal Year End: 0930
Type: SC 13G/A | Act: 34 | File No.: 005-11652 | Film No.: 1779239
SIC: 1381 Drilling Oil & Gas Wells

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
SIC: 0000