US PATENT SUBCLASS 441 / 62
.~.~ Repositioned by biasing means
Current as of:
June, 1999
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441 /
HD
BUOYS, RAFTS, AND AQUATIC DEVICES
55
DF
SWIMMING AID TO INCREASE STROKE EFFICIENCY
{4}
61
DF
.~ Foot attached {3}
62
.~.~ Repositioned by biasing means
DEFINITION
Classification: 441/62
Repositioned by biasing means:
(under subclass 61) Device having means to urge the water-contacting surface to a selected position.
(1) Note. These biasing means keep the surface in an operating position or at selected operating angles.