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Form SC 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0001105806-09-000014
Filing Date
2009-12-01
Accepted
2009-12-01 11:56:18
Documents
1

Document Format Files

Seq Description Document Type Size
1 kei.txt SC 13G 3683
  Complete submission text file 0001105806-09-000014.txt   5201
Mailing Address
Business Address 28775 AURORA RD SOLON OH 44139 2162480400
KEITHLEY INSTRUMENTS INC (Subject) CIK: 0000054991 (see all company filings)

IRS No.: 340794417 | State of Incorp.: OH | Fiscal Year End: 0930
Type: SC 13G | Act: 34 | File No.: 005-37166 | Film No.: 091214125
SIC: 3825 Instruments For Meas & Testing of Electricity & Elec Signals

Mailing Address 467 CPW NY NY 10025
Business Address
LYTTON LAURENCE W (Filed by) CIK: 0001105806 (see all company filings)

Type: SC 13G