Electrical and Scientific Apparatus

Owner

TRI-GAS, INC.

Feb 11, 1997

Computer and Scientific

Owner

TRI-GAS, INC.

Aug 19, 1997

Electrical and Scientific Apparatus

Owner

TRI-GAS, INC.

Mar 19, 1996

Electrical and Scientific Apparatus

Owner

TRI-GAS, INC.

Dec 17, 1996

Electrical and Scientific Apparatus

Owner

TRI-GAS, INC.

May 28, 1996