US PATENT SUBCLASS 110 / 279
.~.~.~ Manual actuation means

Current as of: June, 1999
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110 /   HD   FURNACES

267  DF  INCLUDING MEANS TO FEED SOLID FUEL {4}
268  DF  .~ Movable grate {5}
278  DF  .~.~ Oscillatory {2}
279.~.~.~ Manual actuation means

DEFINITION

Classification: 110/279

Manual actuation means:

(under subclass 278) Apparatus further provided with means for producing the oscillatory motion by human hand motion.