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Filing Detail
Form SC 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0000902219-01-000080
Filing Date
2001-02-12
Accepted
2001-02-12 00:00:00
Documents
1

Document Format Files

Seq Description Document Type Size
1 0001.txt SC 13G 9347
  Complete submission text file 0000902219-01-000080.txt   11348
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

Mailing Address 100 CROSSING BLVD. FRAMINGHAM MA 01702
Business Address 100 CROSSING BLVD FRAMINGHAM MA 01702 5086501300
NATURAL MICROSYSTEMS CORP (Subject) CIK: 0000915866 (see all company filings)

IRS No.: 042814586 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G | Act: 34 | File No.: 005-43813 | Film No.: 1533960
SIC: 3661 Telephone & Telegraph Apparatus