US PATENT SUBCLASS 396 / 574
.~.~ Processing vapor from source other than photographic medium

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

564  DF  FLUID-TREATING APPARATUS {18}
571  DF  .~ Heating, cooling, or temperature detecting {6}
574.~.~ Processing vapor from source other than photographic medium

DEFINITION

Classification: 396/574

Processing vapor from source other than photos:graphic medium:

(under subclass 571) Subject matter wherein a latent image on a photos:graphic medium is made visible by a gaseous substance provided externally to the photos:graphic medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

579, for generic gaseous treating of a photos:graphic medium.