LUFKIN INDUSTRIES INC

Q: Mar 31 2013

FY: Dec 31 2012

Q: Sep 30 2012

Q: Jun 30 2012

Q: Mar 31 2012

FY: Dec 31 2011

Q: Sep 30 2011

Q: Jun 30 2011

Q: Apr 30 2011

FY: Dec 31 2010

Q: Sep 30 2010

Q: Aug 3 2010

Q: Aug 3 2010

Q: Mar 31 2010

FY: Dec 31 2009

Q: Sep 30 2009

Q: Jun 30 2009

Q: May 8 2009

FY: Feb 24 2009

Q: Nov 5 2008

1.02,2.01,3.01,3.03,5.01,5.02,5.03,9.01

5.07,8.01,9.01

8.01

Other Events

Other Events

8.01

Regulation FD Disclosure

1.01,9.01

5.03,9.01

2.02,9.01

2.02,9.01

5.02

Results of Operations and Financial Condition

Results of Operations and Financial Condition

8.01,9.01

2.02,9.01

5.07

5.02,9.01

1.01,2.01,2.03,7.01,9.01

2.01,9.01

Certification of termination of registration of a class of securities (Section 12(g))

Notice of Effectiveness

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Notification of removal from listing and/or registration on a national securities exchange

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Delayed or Continuous Offering

Automatic Shelf Registration

06

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Certification of termination of registration of a class of securities (Section 12(g))

No description available

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

No description available

No description available

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

none

WIENER THOMAS E

Gifford Brian J

HAY CLAUDE D

SEMLINGER SCOTT H

ANDERSON JOHN F

BAER SUZANNE V

Hofmeister John

JONGEBLOED JAMES T

JONGEBLOED JAMES T

Hofmeister John

LOLLAR JOHN H

SMITH DOUGLAS V

STEWART RICHARD ROSS

TROUT H J JR

GLICK JOHN F

none

CREWS MARK E

Cestero Alejandro

Boone Christopher L

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC