US PATENT SUBCLASS 431 / 358
.~ Fuel charge within sealed transparent casing, e.g., bulb

Current as of: June, 1999
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431 /   HD   COMBUSTION

357  DF  ILLUMINATING FLASH DEVICE, E.G., PHOTOGRAPHIC BULB, ETC. {4}
358.~ Fuel charge within sealed transparent casing, e.g., bulb {4}
359  DF  .~.~> Plurality of bulbs associated for sequential ignition
360  DF  .~.~> Coated casing
361  DF  .~.~> Percussive ignition means ignites charge
362  DF  .~.~> Electrically ignited primer ignites charge

DEFINITION

Classification: 431/358

Fuel charge within sealed transparent casing, e.g., bulb:

(under subclass 357) Apparatus in which the substance to be burned is sealed within a transparent envelope, said envelope further containing the necessary atmosphere or other substance to support the burning process.

(1) Note. This subclass includes a combustible flashbulb with a nominally claimed light modifier or reflector and see the search note below to Class 362, Illumination, for a classification for the combination.

SEE OR SEARCH CLASS

53, Package Making,

79+, and 403+ for methods of, and apparatus for, evacuating or gas filling a receptacle and closing the evacuated filled receptacle.

219, Electric Heating,

267, for a housing, casing, or support for a resistive igniter element.

220, Receptacles, 2.1+, for an envelope for an electric lamp.

313, Electric Lamp and Discharge Devices, appropriate subclass for residual electric lamp or discharge structure.

362, Illumination,

3+, for a light source combined with a means adapted to perfect or modify the illumination, such as a reflector.

445, Electric Lamp or Space Discharge Component or Device Manufacturing, appropriate subclass for methods and apparatus for manufacturing electric lamp and electric space discharge devices.