USPC 114/68

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U.S. Patent Classification (USPC) class 114/68 covers insubmergible vessels not elsewhere classified. These marine vessels have some means for preventing them from sinking, perhaps with (a) bulkheads or compartments to keep them afloat or (b) impenetrable or puncture-proof skins, sides, linings, or fillings which are waterproof or stop leaks.[1][2]

USPC 114/68 is a subclass of 114/65, which covers construction of marine vessels.[3]

References

Patents in this category
Enclosing categories USPC 114
Subcategories
Keywords gas bags, Gas pressure, Inflation, Elevation, Balloon, Compartments, Fabric, Marine
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