US PATENT SUBCLASS 126 / 297
.~.~ Sinuous passage

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

285 R  DF  DAMPERS {7}
292  DF  .~ Stovepipe {5}
297.~.~ Sinuous passage

DEFINITION

Classification: 126/297

(under subclass 292) Devices comprising single-spindle-operating pipe-dampers that have retarding means for giving a circuitous course to the products.