Filed Aug. 10, 1993

Serial No. 74423418

Registered May 7, 1996

Registration No. 1,972,099

Class emissions monitoring and process control systems used in gas and liquid separation systems, odorization systems, pulsation dampening systems, catalytic reduction systems, and environmental and emission control systems, comprising - field instruments, controls and interfaces, control panels, metering and reporting instruments, and electronic instruments and controls, and control software; 021; 023; 026; 036; 038; 013; 021; 023; 031; 034; 100; 101