US PATENT SUBCLASS 392 / 420
.~.~.~ Plural reflectors


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

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
407  DF  .~ Radiant heater {10}
419  DF  .~.~ Focussed radiant beam {2}
420.~.~.~ Plural reflectors


DEFINITION

Classification: 392/420

Plural reflectors:

(under subclass 419) Subject matter including two or more opaque mirror-like means which redirect the incident radiation back to the medium from which it came.

SEE OR SEARCH CLASS

219, Electric Heating,

405, for heat energy reflecting or directing means and subclass 411 for infrared generating means.

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

850+, for plural mirrors.

362, Illumination,

297+, for plural reflecting surface and subclasses 346+ for plural separate reflectors or separate section.