SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000902219-98-000432
Filing Date
1998-02-10
Accepted
1998-02-10 00:00:00
Documents
1
SROs
NASD

Document Format Files

Seq Description Document Type Size
1 13G FILING SC 13G/A 7045
  Complete submission text file 0000902219-98-000432.txt   9060
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 8 ERIE DR NATICK MA 01760
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/A | Act: 34 | File No.: 005-43813 | Film No.: 98529780
SIC: 3661 Telephone & Telegraph Apparatus