US PATENT SUBCLASS 165 / DIG 495
.~ Single unitary conduit structure bent to form flow path with side-by-side 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 495.~ Single unitary conduit structure bent to form flow path with side-by-side sections {2}
DIG 496  DD  .~.~> Spiral or helical coil
DIG 497  DD  .~.~> Serpentine flow path with straight side-by-side sections {1}