A flow detector to detect and monitor the flow of fluid through a conduit comprising a first flow detection element selectively moveable between a first position and a second position and a second flow detection element disposed to operatively engage the first flow detection element when in the second...http://www.google.fr/patents/US6338279?utm_source=gb-gplus-shareBrevet US6338279 - Flow detector to monitor a number of flow events or duration
Flow detector to monitor a number of flow events or duration
