US PATENT SUBCLASS 362 / 180
.~.~ Chimmey type

Current as of: June, 1999
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362 /   HD   ILLUMINATION

157  DF  SELF POWERED LAMP {16}
159  DF  .~ Nonelectric {9}
180.~.~ Chimmey type

DEFINITION

Classification: 362/180

(under subclass 159) Subject matter having means to encompass a light source and transmit light and has an opening on the top and bottom for a draft.

SEE OR SEARCH THIS CLASS, SUBCLASS:

312, for chimney refraction, per se.