E03F - Sewers; Cesspools - Patents Sitemap

More topics under "E03F - Sewers; Cesspools" (22,493)
E03F 1 - Methods, systems, or installations for draining-off sewage or storm water (3,565)
E03F 11 - Cesspools (352)
E03F 3 - Sewer pipe-line systems (3,593)
E03F 5 - Sewerage structures (11,230)
E03F 7 - Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools (2,571)
E03F 9 - Arrangements or fixed installations for cleaning sewer pipes, e.g. by flushing (1,182)

Patents for E03F - Sewers; Cesspools (38)
05/2012
05/08/2012	CA2588769C Vacuum sewer system
05/2011
05/04/2011	EP1951964B1 Swirl chamber with movable non-return valve and air injector for prevention of sedimentation in storm water and waste water drains
12/2010
12/07/2010	US7845028 Vacuum sewer system
10/2010
10/12/2010	US7811450 Swirl chamber with movable non-return valve and air injector for prevention of sedimentation in storm water and waste drains
12/2009
12/23/2009	CN100572703C Vacuum sewer system
10/2008
10/23/2008	US20080256697 Vacuum Sewer System
08/2008
08/06/2008	EP1951964A1 Swirl chamber with movable non-return valve and air injector for prevention of sedimentation in storm water and waste water drains
01/2008
01/16/2008	CN101107405A Vacuum sewer system
10/2007
10/10/2007	EP1841927A1 Vacuum sewer system
07/2007
07/19/2007	US20070163940 Swirl chamber with movable non-return valve and air injector for prevention of sedimentation in strom water and waste drains
10/2006
10/18/2006	CN2828175Y Anti-mouse, anti-mosquito gate for sewer sand well
08/2006
08/03/2006	WO2006079688A1 Vacuum sewer system
08/03/2006	WO2006079687A1 Vacuum sewer system
07/2006
07/12/2006	CN2795309Y Sewer drain with one-way isolation door
03/2006
03/08/2006	EP1632617A2 Ball joint for pipes and well comprising such a joint
10/2005
10/06/2005	WO2005093179A1 Swirl chamber with movable non-return valve and air injector for prevention of sedimentation in storm water and waste water drains
11/2004
11/24/2004	CN2658242Y Drain cover device of sewer pipe
09/2004
09/22/2004	EP1030951B1 A mobile unit and method for purifying sludge and waste water
10/2003
10/22/2003	CN2581552Y Funnel-type sewer sand screen
04/2002
04/30/2002	US6379547 Mobile unit and method for purifying sludge and waste water
01/2002
01/30/2002	CN1078654C Waste water pump station
08/2000
08/30/2000	EP1030951A1 A mobile unit and method for purifying sludge and waste water
01/2000
01/11/2000	CA2186980C Wastewater pump station
06/1999
06/03/1999	WO1999027205A1 A mobile unit and method for purifying sludge and waste water
10/1998
10/20/1998	US5823751 Mounting device for submersible electric motor driven pump
07/1998
07/08/1998	CN1186892A Waste water pump station
08/1997
08/19/1997	US5658135 Waste water pump station
05/1997
05/21/1997	EP0774584A1 A device for mounting and keeping together parts in a submersible pump unit
04/1997
04/09/1997	EP0767279A1 Waste water pump station
06/1992
06/23/1992	US5123444 Back flow blocker in sloping pipes
10/1991
10/22/1991	US5059313 Conveyor rake sieve with hook-like plates
09/1991
09/18/1991	EP0358672B1 Back flow blocker in sloping pipes
08/1991
08/07/1991	EP0393094B1 Telescopic well or column pipe
10/1990
10/24/1990	EP0393094A1 Telescopic well or column pipe.
10/03/1990	EP0389816A2 Separator, particularly for sewage works
03/1990
03/21/1990	EP0358672A1 Back flow blocker in sloping pipes.
06/1989
06/01/1989	WO1989004895A1 Telescopic well or column pipe
11/1988
11/03/1988	WO1988008471A1 Back flow blocker in sloping pipes