Liquid purification or separation – Structural installation – Flume stream type
Reexamination Certificate
2006-10-31
2006-10-31
Upton, Christopher (Department: 1724)
Liquid purification or separation
Structural installation
Flume stream type
C210S162000, C210S170050, C210S339000, C210S474000
Reexamination Certificate
active
07128832
ABSTRACT:
A filter pit is disclosed. The pit has an inlet and an outlet adjacent a base of the pit. A primary, a secondary and a tertiary filter are located between the inlet and outlet and the tertiary filter is supported above the base and is able to dry out when the flow of water through the pit ceases.
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patent: 5405539 (1995-04-01), Schneider
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patent: 6217757 (2001-04-01), Fleischmann
Millen White Zelano & Branigan P.C.
Upton Christopher
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