US PATENT SUBCLASS 392 / 488
.~.~.~ Pipe or tube forms flow path

Current as of: June, 1999
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392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
465  DF  .~ Continuous flow type fluid heater {12}
485  DF  .~.~ Heated line section with heating element internal of flow path {6}
488.~.~.~ Pipe or tube forms flow path {1}
489  DF  .~.~.~.~> With jacket for heating element

DEFINITION

Classification: 392/488

Pipe or tube forms flow path:

(under subclass 485) Subject matter wherein the flow path for the fluid to be heated comprises a fluid conveying elongated hollow cylinder.

SEE OR SEARCH THIS CLASS, SUBCLASS:

308, for heating fluid with non-electric heating means.

397, for pipe or tube forming flow path.

470+, for disposable cartridge, tube or bag forming heated

flow path.

472, for flexible hose.

478, for fluid conveying tube or pipe comprising resistive element. 480+, for pipe or tube forming flow path for continuous fluid heater.

482, for plural pipes or tubes forming flow path.