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Patent
   D431858
Priority
Mar 02 1998
Filed
Mar 02 1998
Issued
Oct 10 2000
Expiry
Oct 10 2014
Inventors
Nagato, Ha…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
5
References
5
Maint.:
n/a
The ornamental design for a wastewater treatment tank, as shown.

FIG. 1 is a perspective view.
INVENTORS:

Nagato, Harold K.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D483836, Jun 14 2002 QUANICS, INC Biofilter treatment module
D510757, Mar 02 2004 ECOLOGICAL TANKS, INC Trio sewage treatment plant
D625388, Oct 08 2009 Pumptec Inc.; PUMPTEC INC Sprayer tank module
D635218, Oct 08 2009 Pumptec Inc. Sprayer housing
D651278, Apr 14 2011 Waste water treatment tank apparatus
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
4325823, May 12 1980 TOM GRAHAM & ASSOCIATES, INC , A CORP OF CA Wastewater treatment system
226192,
239506,
D347257, Jun 20 1991 Septic tank for holding sewerage
D357530, Dec 17 1993 THE PLASTICS GROUP, INC Sewage septic tank
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