|
US8959787B2
(en)
|
|
Depth determination apparatus
|
|
US4131773A
(en)
|
|
Apparatus for detecting presence of oil in a body of water
|
|
US3946625A
(en)
|
|
Liquid detector
|
|
US4442405A
(en)
|
|
Float assembly for a sensor
|
|
US4175435A
(en)
|
|
Liquid level detecting device
|
|
US4213340A
(en)
|
|
Oil-water interfacial detector
|
|
AU558542B2
(en)
|
|
Improved buoyant alarm device
|
|
DE1190688B
(en)
|
|
Immersion tube switch
|
|
US4748299A
(en)
|
|
Level sensing system with latching device
|
|
US6732584B2
(en)
|
|
Fuel level sensor with flexible circuit
|
|
US4765178A
(en)
|
|
Hydrocarbon probe
|
|
DE630435C
(en)
|
|
Electric display device for changes in density of liquids
|
|
DE825105C
(en)
|
|
Electrical switching device operated by a float
|
|
AT319628B
(en)
|
|
Probe for monitoring the filling process when filling a container with a liquid
|
|
BE813640A
(en)
|
|
HYDROCARBON FILM DETECTOR FOR CALM AND AGITATED WATERS.
|
|
JPS5287090A
(en)
|
|
Liquid detector
|
|
DE3635397A1
(en)
|
|
Limit level sensor for liquid tanks
|
|
DD59119A
(en)
|
|
|