SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form NT 10-K - Notification of inability to timely file Form 10-K 405, 10-K, 10-KSB 405, 10-KSB, 10-KT, or 10-KT405:
SEC Accession No. 0000950123-10-113547
Filing Date
2010-12-14
Accepted
2010-12-14 17:27:59
Documents
1
Period of Report
2010-09-30
Effectiveness Date
2010-12-14

Document Format Files

Seq Description Document Type Size
1 FORM NT 10-K l41355ntnt10vk.htm NT 10-K 22863
  Complete submission text file 0000950123-10-113547.txt   24211
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: NT 10-K | Act: 34 | File No.: 001-09965 | Film No.: 101251451
SIC: 3825 Instruments For Meas & Testing of Electricity & Elec Signals