US PATENT SUBCLASS 126 / 538
.~.~ Variable predetermined positions

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

500  DF  FIREPLACES OR ACCESSORIES {19}
536  DF  .~ Adjustable flue damper {3}
538.~.~ Variable predetermined positions

DEFINITION

Classification: 126/538

Variable predetermined positions:

(under subclass 536) Subject matter including means holding said closure plate in a plurality of preset positions.