171056 ⎘
Indicating or recording presence, absence, or direction, of movement by using a window mounted in the fluid carrying tube with photo-electric detection
Two-dimensional wind-speed and wind-direction sensor and system thereof
#2Monitoring device and method of an oil flow mixed with air
#3METHOD FOR DETECTING THE OCCLUSION OF A TUBING FOR A DEVICE FOR ADMINISTERING PHYSIOLOGICAL LIQUIDS
#4Apparatus and method for detecting liquid flow from a spray device