US PATENT SUBCLASS 116 / 113
.~ Shoal water
Current as of: June, 1999
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DEFINITION
Classification: 116/113
(under subclass 67) Devices include systems based upon the varying depth of water, used on moving vessels to give
warning when the water is shoaling.
SEE OR SEARCH CLASS
33, Geometrical Instruments,
713, for distance sounding type devices.
