US PATENT SUBCLASS 126 / 520
.~ Insertable into existing window

Current as of: June, 1999
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126 /   HD   STOVES AND FURNACES

500  DF  FIREPLACES OR ACCESSORIES {19}
520.~ Insertable into existing window

DEFINITION

Classification: 126/520

Insertable into existing window:

(under subclass 500) Subject matter including means accommodating a firebox structure for positioning it in a pre-existing opening constructed to admit light or air to said inhabitable enclosure.