DE3569098D1
(en )
1989-05-03
Apparatus for the aeration of waste water or similar matter in aeration tanks
AU554888B2
(en )
1986-09-04
Waste water treatment
GB8416993D0
(en )
1984-08-08
Biological activating cleaning of waste waters
IT9067046A0
(en )
1990-01-24
DEVICE FOR THE PURIFICATION OF WASTE WATER.
GB2143811B
(en )
1987-09-23
Biological activating cleaning of waste waters
IT8219529A0
(en )
1982-02-09
PROCEDURE FOR PURIFYING LOWLY POLLUTED WASTE WATER.
GB2098591B
(en )
1985-02-20
Biological water cleaning unit
IT8320457V0
(en )
1983-01-13
CONNECTION DEVICE IN PARTICULAR OF SELF-CLEANING OXYGEN BLOCKS FOR THE AERATION OF WASTE WATER.
DE3369652D1
(en )
1987-03-12
Waste water clarifier
FR2606591B1
(en )
1988-12-02
IMPROVEMENTS IN WATER TAPS FOR ANIMALS
GB2112768B
(en )
1985-01-30
Microbiological waste water purification
DE3891277T1
(en )
1990-04-05
ELECTROLYSIS FOR WASTEWATER CLEANING
KR890006901U
(en )
1989-05-15
water purifier
GB8716573D0
(en )
1987-08-19
Biological purification of waste waters
KR930025643U
(en )
1993-12-20
Disposable water purifier
KR890000050U
(en )
1989-03-02
Fish tank water purifier
KE3827A
(en )
1988-12-02
Waste water clarifier
IT8104717V0
(en )
1981-01-30
PERFECTED WATER PURIFIER
SE8703071D0
(en )
1987-08-06
PROCEDURE FOR CLEANING THE WASTE WATER FOR MINOR WORKS
IT8323281V0
(en )
1983-10-17
WATER PURIFIER IN PARTICULAR FOR DOMESTIC USE.
HU911586D0
(en )
1991-11-28
Waste water purifying apparatus composed of small units named "magad-e" i. e. "your own"
IT8350811V0
(en )
1983-08-11
WATER PURIFIER FILTER FOR BOTTLES
KR890004918U
(en )
1989-04-18
Magnetized water purifier
KR890010712U
(en )
1989-07-11
water purifier
KR880015949U
(en )
1988-10-07
water purifier