US PATENT SUBCLASS 165 / DIG 456
.~ Readily and independently detachable sections

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

DIG 454  DD  HAVING SIDE-BY-SIDE CONDUITS STRUCTURE OR CONDUIT SECTION {16}
DIG 456.~ Readily and independently detachable sections {1}
DIG 457  DD  .~.~> Individual manifolds for each section