US PATENT SUBCLASS 210 / 497.01
.~.~ Cylindrical, conical, or trough shape

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

348  DF  FILTER {25}
483  DF  .~ Supported, shaped or superimposed formed mediums {11}
497.01.~.~ Cylindrical, conical, or trough shape {3}
497.1  DF  .~.~.~> Helically wound
497.2  DF  .~.~.~> Filter blank
497.3  DF  .~.~.~> Conical

DEFINITION

Classification: 210/497.01

Cylindrical, conical, or trough shaped:

(under subclass 483) Apparatus in which the filter medium is shaped to form a cylinder, cone, or open trough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

380.1+, for a centrifuge basket.

433.1+, for a through flow tubular type filter.

SEE OR SEARCH CLASS

55, Gas Separation,

498, 500, and 521 for gas filters of cylindrical or conical form.