166818 ⎘
Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group or by the use of counterbalancing forces hydraulic or pneumatic counterbalancing forces
Ludion pressure measurement system
#2PORE PRESSURE MONITORING DEVICE AND METHOD FOR MONITORING PORE WATER PRESSURE
#3High-temperature gas pressure measuring method
#4Pressure measurement in highly deviated wells
#5Pressure measurement in highly deviated wells
#6Apparatus and method for controlling and monitoring the pressure in pressure line or pipes