US PATENT SUBCLASS 210 / 451
.~.~ Internal fixed shoulder supporting filter element

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

348  DF  FILTER {25}
435  DF  .~ Within flow line or flow line connected close casing {9}
451.~.~ Internal fixed shoulder supporting filter element {1}
452  DF  .~.~.~> Single open-end-type filter element

DEFINITION

Classification: 210/451

(under subclass 435) Apparatus in which the casing is provided with an internal shoulder from which the filter element is supported.

SEE OR SEARCH THIS CLASS, SUBCLASS:

477, for a filter resting on an internal stop or surface of a receiver of more general construction.