US PATENT SUBCLASS 110 / 122
.~ Smokebox


Current as of: June, 1999
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110 /   HD   FURNACES

119  DF  SPARK ARRESTERS {3}
122.~ Smokebox {7}
123  DF  .~.~> Draft regulator
124  DF  .~.~> Divided
125  DF  .~.~> Hood
126  DF  .~.~> Vertical drum
127  DF  .~.~> Ejector
128  DF  .~.~> Water receptacle
129  DF  .~.~> Discharge valve


DEFINITION

Classification: 110/122

(under subclass 119) Devices located in the smokebox for arresting sparks.