74230892
Dec 16, 1991
Dec 7, 1993
environmental control and mineral oil product transportation loading and storage control equipment; namely, electrical measurement gauges for fluid level and flow control; level gauge sensors and alarm systems comprising capacitive or hydrostatic level sensors and an electrical measurement gauge for fluid level and flow control; filling safety systems comprising electro-optical level switch sensors and electrical measurement gauges for fluid level and flow control; fluid level alarm systems comprising electro-opical level sensors and electronic limit level indicators; leak detectors and leak warning units; computer software for liquid storage, transportation and transfer monitoring and control
Electrical and Scientific Apparatus