AT347869B
(en )
1979-01-25
RAIN OVERFLOW STRUCTURE
TR19171A
(en )
1978-06-16
NEW PROCEDURE FOR OXIDIZING WATER TREATMENT
MX143014A
(en )
1981-02-10
IMPROVED LAND DRAIN
DK583977A
(en )
1978-07-01
D PROCEDURE FOR IMPROVING THE WATER MOISTURE OF POLYOLEFINS
ATA737275A
(en )
1978-09-15
WATER VAPOR-PERMEABLE COVERING
DK512176A
(en )
1977-05-15
AUTOMATIC WATER PLANT
SE457276B
(en )
1988-12-12
SEWAGE WATER
PL97272B1
(en )
1978-02-28
SLATING DAM REPEATABLE WITH GUTTER FOR PITCH AND DRAINAGE WATER
DK320376A
(en )
1977-01-17
ELECTROLYSIS CELL FOR WATER TREATMENT
AT353704B
(en )
1979-11-26
ODOR TRAP WITH WATER LEVEL
TR20444A
(en )
1981-07-14
WATERPROOFING WATER THAT CAN EXPAND AS SUEREKLI
FR2294524A1
(en )
1976-07-09
WATER RESISTANCE AND QUICK ADJUSTMENT
NO139885C
(en )
1979-05-30
REVERSE DEVICE FOR WATER JET-OPERATED FARTOEY
AT369834B
(en )
1983-02-10
DEVICE FOR ACCESSING ROOFS COVERED WITH ROOF TILES
DK245777A
(en )
1977-12-05
DRAINAGE FOR WATER SOURCES
AT351717B
(en )
1979-08-10
DRAINAGE GUTTER
IT1057799B
(en )
1982-03-30
ROOF GUTTER CLOSURE
SE384703B
(en )
1976-05-17
DRAINAGE AT DRAINS
SE395294B
(en )
1977-08-08
DRAINAGE AT DRAINS
DD132278A1
(en )
1978-09-13
DEVICE FOR THE AUTOMATIC DETECTION OF VARIABLE WATER LEVELS
PL198363A1
(en )
1978-12-04
METHOD OF DRAINAGE OF FLOATING ROOFS IN TANKS WITH SLIDING ROOFS
PL106941B1
(en )
1980-01-31
RETRACTABLE FILLING DAM WITH GUTTER FOR GROUNDING AND DRAINING FILLING WATER
SE7609535L
(en )
1977-03-06
DRAINAGE PROCEDURE
SU519623A1
(en )
1976-06-30
Device for determining the water content of rain
SE7600060L
(en )
1976-07-21
WIND OR WATER ENGINE