|
US4744256A
|
|
Airborne water sampler device
|
|
US4708321A
|
|
Multiple sheave assembly with angled rollers
|
|
US4593570A
|
|
Water sampler device with key
|
|
US4545243A
|
|
Nonrotating current meter housing
|
|
US4492363A
|
|
Multiple pulley sheave assembly with retainer pulleys
|
|
US4417718A
|
|
Counter balanced sheave assembly with multiple pulleys
|
|
US4347751A
|
|
Electric water sampling device
|
|
US4350931A
|
|
Light saver device
|
|
US4301995A
|
|
Counter-balanced sheave
|
|
US4307605A
|
|
Current meter
|
|
US4295675A
|
|
Cover for port light
|
|
US4302974A
|
|
Water sampling device
|
|
US4106751A
|
|
Rotatable valve assembly
|
|
US4091666A
|
|
Combined housing and standard for water flow meters
|
|
US4037477A
|
|
Water sampler device
|
|
US4026148A
|
|
Water flow meter
|
|
US3971251A
|
|
Dynamically balanced apparatus for water borne instruments
|
|
US3986635A
|
|
Closure locking and orienting device
|
|
US3955412A
|
|
Water current force measuring apparatus
|
|
US3869913A
|
|
Method and apparatus for determining surface wind velocity
|
