US PATENT SUBCLASS 392 / 421
.~.~.~ Elliptical or ellipsoidal reflector

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}
421.~.~.~ Elliptical or ellipsoidal reflector

DEFINITION

Classification: 392/421

Elliptical or ellipsoidal reflector:

(under subclass 419) Subject matter wherein the concentrated beam is produced by a reflector assembly of elliptical or ellipsoidal shape.

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,

838+, for mirrors.