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Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0000950123-10-100639
Filing Date
2010-11-04
Accepted
2010-11-04 11:03:41
Documents
2
Effectiveness Date
2010-11-04

Document Format Files

Seq Description Document Type Size
1 DEFA14A l40849fdefa14a.htm DEFA14A 116453
2 GRAPHIC l40849fl4084901.gif GRAPHIC 1378
  Complete submission text file 0000950123-10-100639.txt   119817
Mailing Address
Business Address 28775 AURORA RD SOLON OH 44139 2162480400
KEITHLEY INSTRUMENTS INC (Filer) CIK: 0000054991 (see all company filings)

IRS No.: 340794417 | State of Incorp.: OH | Fiscal Year End: 0930
Type: DEFA14A | Act: 34 | File No.: 001-09965 | Film No.: 101163693
SIC: 3825 Instruments For Meas & Testing of Electricity & Elec Signals