US PATENT SUBCLASS 441 / 135
BUOYANCY UNDERWATER VIEWING DEVICE
Current as of:
June, 1999
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BUOYS, RAFTS, AND AQUATIC DEVICES
135
BUOYANCY UNDERWATER VIEWING DEVICE
DEFINITION
Classification: 441/135
BUOYANT UNDERWATER VIEWING DEVICE:
(under the class definition) Device facilitating below the surface observations usually including a buoyant platform and a window located on the platform and below the water surface.
