| http://www.w3.org/ns/prov#value | - A submersible buoy for use in controlling the descent or ascent in an object in a body of water, comprising, in combination:an inflatable, collapsible buoy member including an inlet for receipt and discharge of an inflating medium, said buoy member capable of being inflated from a collapsed state of minimum buoyancy to a fully inflated state of maximum buoyancy, and valve means connected to said i
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