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Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0000950135-09-003148
Filing Date
2009-04-27
Accepted
2009-04-27 16:53:32
Documents
1
Effectiveness Date
2009-04-27

Document Format Files

Seq Description Document Type Size
1 MKS INSTRUMENTS, INC. b75232dfdefa14a.htm DEFA14A 10977
  Complete submission text file 0000950135-09-003148.txt   12419
Mailing Address 2 TECH DRIVE SUITE 201 ANDOVER MA 01810
Business Address 2 TECH DRIVE SUITE 201 ANDOVER MA 01810 978-645-5500
MKS INSTRUMENTS INC (Filer) CIK: 0001049502 (see all company filings)

IRS No.: 042277512 | State of Incorp.: MA | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 000-23621 | Film No.: 09773077
SIC: 3823 Industrial Instruments For Measurement, Display, and Control