SE424521B
(en )
1982-07-26
HYDRAULIC PIPE
NO148683C
(en )
1983-11-23
PROCEDURE FOR AA PREVENTING INFLUENCE OF Borehole Water
NO149308C
(en )
1984-03-28
PROCEDURE FOR WATER DESOXYGENIZATION
NO774047L
(en )
1978-05-29
SUPPRESSION DRAINAGE SYSTEM FOR BUILDINGS
SE7602658L
(en )
1977-08-28
PROCEDURE FOR DRAINING A SEWER SLUDGE AND THE SPECIFIC DEVICE
DK564077A
(en )
1978-07-01
WASTE GAS PIPE
DK564177A
(en )
1978-07-01
WASTE GAS PIPE
DK151108C
(en )
1988-03-28
drain pipes
FI793808A7
(en )
1980-06-05
DRAINAGE PIPE
NO144819C
(en )
1981-11-18
PROCEDURE FOR WATER DRAINAGE.
IT7868897A0
(en )
1978-08-11
PROCEDURE FOR THE EXPLOITATION OF WASTE AND THE CONTEMPORARY PURIFICATION OF WASTE WATER
JPS5293487A
(en )
1977-08-05
Method of manufacture of perpendicular drain pipe
PL101366B1
(en )
1978-12-30
METHOD OF PROTECTION AGAINST SLUDGE OF DRAINAGE PIPES
DK245777A
(en )
1977-12-05
DRAINAGE FOR WATER SOURCES
DK455078A
(en )
1979-04-14
WRAPPED DRAIN PIPE FOR DRAINAGE AND PROCEDURE AND DEVICE FOR MANUFACTURE OF THE DRAIN PIPE
DK450078A
(en )
1979-04-12
LOWER LOWER FOR UNDERWATER PIPES
JPS5287853A
(en )
1977-07-22
Leakkpreventive device of sewage pipe
DK248977A
(en )
1977-12-08
PROCEDURE FOR THE MANUFACTURE OF STEEL PIPES
JPS5287854A
(en )
1977-07-22
Leakkpreventive method of branched joint portion of sewage pipe
JPS5338149A
(en )
1978-04-07
Drainage pipe for multistory residence
GB1544979A
(en )
1979-04-25
Drain pipe and filter for land drains
SE7805315L
(en )
1978-11-18
DRAIN PIPE SYSTEM
PL198754A1
(en )
1978-04-24
THE METHOD OF IMPROVING THE DRAINAGE OF SEWAGE SLUDGE
DK148982C
(en )
1986-07-07
drain pipes
JPS5369401A
(en )
1978-06-20
Method of inserting drain pipe