Computer and Scientific

Owner

LANDTECH INTERNATIONAL, INC.

May 11, 1993

Chemicals

Owner

LANDTECH INTERNATIONAL INC.

Sep 15, 1992
RX HOT SPOT

Chemicals

Owner

LANDTECH INTERNATIONAL INC.

Feb 9, 1993
BIOORGANIC

Chemicals

Owner

LANDTECH INTERNATIONAL INC.

Oct 19, 1993
XERI-TECH

Chemicals

Owner

LANDTECH INTERNATIONAL INC.

—
CLAY BREAKER

Chemicals

Owner

LANDTECH INTERNATIONAL INC.

Nov 3, 1992