Computer software for compilation of statistics, public opinion polling; Downloadable computer software in the nature of a mobile application for compilation of statistics, public opinion polling

parking guide and vehicle collision warning system, comprising software, distance display, speakers, ultrasonic sensors and warning alarm to assist a driver in backing a vehicle safely; ultrasonic instrumentation comprising ultrasonic level meters, dual channel level meter, sludge level meter, sludge density meter, open channel flow meter and gas flow meter