Form 424B3 - Prospectus [Rule 424(b)(3)]:
SEC Accession No. 0000950135-99-002871
Filing Date
1999-05-20
Accepted
1999-05-20 00:00:00
Documents
1

Document Format Files

Seq Description Document Type Size
1 PROSPECTUS SUPPLEMENT 424B3 1607
  Complete submission text file 0000950135-99-002871.txt   2969
Mailing Address 148 SIDNEY STREET CAMBRIDGE MA 02139
Business Address 333 PROVIDENCE HIGHWAY NORWOOD MA 02062 6176619312
IMMUNOGEN INC (Filer) CIK: 0000855654 (see all company filings)

EIN.: 042726691 | State of Incorp.: MA | Fiscal Year End: 0630
Type: 424B3 | Act: 33 | File No.: 333-31795 | Film No.: 99631072
SIC: 2834 Pharmaceutical Preparations