1
Michael J Lynch, John E Haley, C Lynden Lee, Gilbert H Forehand: Data collection apparatus and train monitoring system. Halliburton Company, James R Duzan, E Harrison Gilbert III, December 27, 1988: US04794548 (58 worldwide citation)

An apparatus for monitoring the operation of a railroad train includes two on-board units which collect and utilize data for ultimate transfer to a portable unit which can be carried onto and off of the railroad train. One of these on-board units operates under microcomputer control to compute speed ...


2
C Lynden Lee: Measurement, calibration and probe storage apparatus for measuring pH of fluids and slurries. Halliburton Company, Stephen R Christian, July 5, 1994: US05325709 (5 worldwide citation)

A measurement/calibration/probe storage apparatus particularly suitable for measuring pH of fluids and slurries used in the treatment of oil and gas wells. The apparatus includes an enclosure having a conduit for the conveyance of a fluid or slurry therein, a flow chamber being in fluid communicatio ...