US PATENT SUBCLASS 114 / 340
.~.~ With periscope

Current as of: June, 1999
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114 /   HD   SHIPS

312  DF  SUBMERSIBLE DEVICE {15}
339  DF  .~ Superstructure {1}
340.~.~ With periscope

DEFINITION

Classification: 114/340

With periscope:

(under subclass 339) Device wherein said structure includes a tubular optical instrument containing mirrors and lenses by which a view of the surface or the water, through which the submergible vessel is moving, is allowed.

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements,

402+, for periscopes, per se.