NO305718B1
(no )
1999-07-12
FremgangsmÕte og anordning for tetting av skjµringspunktet mellom et hovedborehull og et grenborehull
HU890982D0
(en )
1990-12-28
Process for building drill-hole for pipe sections
ZA823430B
(en )
1983-03-30
Drill pipe sections
OA07590A
(en )
1985-03-31
Wire retaining wall apparatus and method for earthen formations.
GB2279721B
(en )
1995-07-12
Underground pipe replacement method and apparatus
IT8567377A1
(it )
1986-10-22
Metodo ed apparecchiatura per formare una struttura di solidificazione sotterranea.
GB2157421B
(en )
1988-01-13
Forwarded underground pipe system position determining apparatus
AU3188489A
(en )
1990-06-12
Method and device for making profiled pipes used for well construction
AU8861782A
(en )
1983-03-31
Apparatus for construction in situ tubular piles
PH25475A
(en )
1991-07-01
Method, equipment for laying an elongated element underground
GB2216211B
(en )
1992-01-02
Insulated pipe joints and methods for forming them.
GB2179116A
(en )
1987-02-25
Pipeline, method and device for laying it
FI915988A0
(fi )
1991-12-19
Menetelmä ja laite maaperään pakotettavien putkien ohjaamiseksi
GB2152561B
(en )
1986-04-09
Handling apparatus for drill pipe and other tubulars
GB2175978A
(en )
1986-12-10
Pipeline, method and device for construction thereof
AU7152981A
(en )
1981-11-10
Device for recovering heat from underground water and/or fromsoil adjoining the underground water
JPS57154580A
(en )
1982-09-24
Double pipeline and its laying method
ITBO930256A0
(it )
1993-06-01
Metodo e dispositivo per il collegamento di due nastri sottili fra loro.
IT215063Z2
(it )
1990-07-30
Apparecchio per il controllo dellisolamento fra una tubazione metallica interrata ed il terreno
NO163926C
(no )
1990-08-08
Fremgangsmaate og anlegg for slagning av flerkjernekabler.
IT1233171B
(it )
1992-03-14
Metodo e dispositivo per il collegamento di tubi
GB8502781D0
(en )
1985-03-06
Repairing drains & underground pipes
EP0686730A4
(en )
1996-05-01
SOIL DRILLING DEVICE AND METHOD FOR MAKING AN UNDERGROUND WALL USING THE SAME
GB2253708B
(en )
1994-08-24
Method for determining underground stresses
JPS5711735A
(en )
1982-01-21
Pipe joint and its forming method and its forming device