Radio frequency identification tags; radio frequency controllers for communicating, actuating, switching, and testing down-hole tools and equipment; electronic, mechanical, and electromechanical data logging tools in the nature of data processing equipment; pressure sensors; location sensors used to detect the location of radio frequency identification tags; radio frequency transmitters and receivers for down-hole tools and hydraulic sliding sleeves; parts, fittings and accessories for the af...

INSTRUMENT TO COLLECT EQUAL FRACTIONS OF AN EFFLUENT LIQUID IN LABORATORY PROCESSES, PARTICULARLY ADSORPTION CHROMATOGRAPHY AND FRACTIONAL DISTILLATION