(under subclass 153) Apparatus in which a separator is part of a system installed in the ground or related to a particular geos:graphic feature, as a lake.
(1) Note. Included in this subclass is in situ purging of flowing or still liquid (e.g., drainage ditch, septic system, pond) wherein a structural installation in which the separator or purifier is (a) part of a system installed on natural or modified terrain to convey rain, snow melt, a river, sewage, well water or oil, etc. or (b) related to a particular nonland geos:graphic feature, such as a lake, ocean, sea, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
154+, for a flume stream type separator.
SEE OR SEARCH CLASS
137, Fluid Handling,
236.1, for a distribution system involving a geos:graphical feature. 405, Hydraulic and Earth Engineering,
36+, for drainage devices and 52+ for fluid control or inhibiting the formation of, containing the spread of, or settling an undesirable floatable or suspended material in a body of water (i.e., treatment).
