| WELLFLOW ENERTECH ENGINEERING AND RESEARCH CO.
73441836 31 Aug 1983 | on 31 Jul 1992 | COMPUTER SOFTWARE PROGRAMS RECORDED ON MAGNETIC MEDIA FOR PREDICTING P... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products COMPUTER SOFTWARE PROGRAMS RECORDED ON MAGNETIC MEDIA FOR PREDICTING PRESSURE DROPS, FLOWING FLUID PROPERTIES AND HYDRAULIC VARIABLES IN A WELL | | | WELLSTRESS Enertech Engineering and Research Co.
73441733 31 Aug 1983 | on 02 May 1991 | Computer Programs Recorded on Magnetic Media for Stress Analysis of Oi... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products Computer Programs Recorded on Magnetic Media for Stress Analysis of Oil and/or Gas Well Components, i.e. Casings, Tubing, Hangers, Cement, Wellbore Formations, Wellheads and the Like | | | WELLTEMP Enertech Engineering and Research Co.
73213804 30 Apr 1979 | on 22 Jul 1988 | Computer Software Programs and Materials Associated Therewith-Namely, ... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products Computer Software Programs and Materials Associated Therewith-Namely, a Computer Code for Determining Downhole Wellbore Temperatures | | | ENERTECH Enertech Engineering and Research Co.
73213355 27 Apr 1979 | on 20 Jan 1988 | Engineering Services-Namely, Design of Drill String, Tubing, Casing an... Class 042 Class 042 Computer & Software Services & Scientific Services Engineering Services-Namely, Design of Drill String, Tubing, Casing and Well Completion Equipment for the Petroleum Industry and for Computing Services-Namely, Software Programs for Thermal Simulation and Stress Analysis in Conjunction with Subsurface Conditions in the Petroleum Industry | | | ETI Enertech Engineering and Research Co.
73213806 30 Apr 1979 | on 07 Oct 1987 | Engineering Services-Namely, Design of Drill String, Casing and Well C... Class 042 Class 042 Computer & Software Services & Scientific Services Engineering Services-Namely, Design of Drill String, Casing and Well Completion Equipment for the Petroleum Industry and Thermal Simulation and Stress Analysis of Subsurface Conditions for the Petroleum Industry Through the Use of a Computer | |