US PATENT SUBCLASS 340 / 600
.~.~ Radiant energy


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
600.~.~ Radiant energy


DEFINITION

Classification: 340/600

Radiant energy:

(under subclass 540) Subject matter wherein the condition is a predetermined level of radiation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

578, for flame detection using radiant energy.

584+, for detecting heat levels by thermally emitted radiant energy.

SEE OR SEARCH CLASS

219, Electric Heating,

248, for a heating device combined with a sole plate-type pressure application means (e.g., a flatiron, etc.) including a condition-responsive indicator, subclass 445.1 for an exposed planar support surface for material to be heated (e.g., hot plate, etc.) including an indicator, or subclasses 446.1+ for an exposed planar support surface for material to be heated (e.g., hot plate, etc.) including a sensing means.

250, Radiant Energy, 336.1+, for invisible radiant energy responsive electric signalling; and subclasses 200+ for photocell circuitry.

356, Optics: Measuring and Testing,

219+, for photoelectric photometers.