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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000902219-97-000567
Filing Date
1997-02-14
Accepted
1997-02-14 00:00:00
Documents
1
SROs
NASD

Document Format Files

Seq Description Document Type Size
1 SC 13G/A 7147
  Complete submission text file 0000902219-97-000567.txt   9134
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 8 ERIE DR NATICK MA 01760 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.: 97531882
SIC: 3661 Telephone & Telegraph Apparatus