US PATENT SUBCLASS 55 / 469
.~ Manual, weight, or traction operated gas pump


Current as of: June, 1999
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55 /   HD   GAS SEPARATION

467  DF  WITH GAS FLOW EFFECTING MEANS {7}
469.~ Manual, weight, or traction operated gas pump


DEFINITION

Classification: 55/469

(under subclass 467) Apparatus in which the gas is forced to pass through, or relative to the separating media by hand or foot actuated means, by mechanically actuated means having contact with a surface along which it moves, or by a weight motor means.