THERMOQUEST CORP \DE\

FY: Jan 1 2000

FY: Jan 1 2000

Q: Oct 2 1999

Q: Jul 3 1999

Q: Apr 3 1999

FY: Jan 2 1999

Q: Oct 3 1998

Q: Jul 4 1998

Q: Apr 4 1998

FY: Jan 3 1998

Q: Sep 27 1997

Q: Jun 28 1997

Q: Mar 29 1997

FY: Sep 28 1996

FY: Dec 28 1996

Q: Sep 28 1996

Q: Aug 6 1996

Q: May 7 1996

5,7

5

5,7

2,7

Acquisition or disposition of assets

5

5

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

Registration of Securities on Exchange (amendment)

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

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

Post-effective amendment to a registration statement

Registration statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

Registration (IPO) statement under Securities Act of 1933

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

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

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

THERMO INSTRUMENT SYSTEMS INC

THERMO INSTRUMENT SYSTEMS INC

THERMO INSTRUMENT SYSTEMS INC

THERMO INSTRUMENT SYSTEMS INC

THERMO ELECTRON CORP

THERMO ELECTRON CORP