US PATENT SUBCLASS 221 / 144
.~.~.~ Including vacuum or draft producing means
Current as of:
June, 1999
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221 /
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ARTICLE DISPENSING
135
DF
WITH ARTICLE TREATMENT
{2}
136
DF
.~ With igniting means {3}
143
DF
.~.~ Electrical {2}
144
.~.~.~ Including vacuum or draft producing means {2}
145
DF
.~.~.~.~
> Pump or fan
146
DF
.~.~.~.~
> Stack or chimney
DEFINITION
Classification: 221/144
(under subclass 143) Devices additionally including static or dynamic means to cause a flow of air.
