US PATENT SUBCLASS 114 / 334
.~ Having air supply

Current as of: June, 1999
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312  DF  SUBMERSIBLE DEVICE {15}
334.~ Having air supply

DEFINITION

Classification: 114/334

Having air supply:

(under subclass 312) Device wherein means are provided to supply or circulate a breathable gaseous mixture to the interior of a submergible device.