US PATENT SUBCLASS 210 / 603
.~.~ Including collecting or storing gas (e.g., fuel, carbon monoxide, etc.)

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

600  DF  PROCESSES {14}
601  DF  .~ Treatment by living organism {13}
603.~.~ Including collecting or storing gas (e.g., fuel, carbon monoxide, etc.) {1}
604  DF  .~.~.~> And reusing oxidant

DEFINITION

Classification: 210/603

Including collecting or storing gas (e.g., fuel, carbon monoxide, etc.):

(under subclass 601) Process in which a gas, either added or generated, is collected.

SEE OR SEARCH CLASS

48, Gas: Heating and Illuminating,

197+, for a process for the manufacture of gas from sewage.