CH307229A
(en )
1955-05-31
Rotary drill bits.
AT271550B
(en )
1969-06-10
Driving machine for tunnels, galleries, channels or the like.
ATA21172A
(en )
1976-12-15
LINING FOR TUNNELS, CLUTCHES, OR DGL.
CH401873A
(en )
1965-11-15
Group drill for rock drilling
AT176527B
(en )
1953-10-26
Method for drilling tunnels, tunnels, channels, shafts or the like and tunnel boring machine for this purpose
CH452580A
(en )
1968-03-15
Driving machine for driving adits, tunnels, shafts or the like
FR1059859A
(en )
1954-03-29
Method and apparatus for boring galleries, tunnels, canals, shafts or other excavations
AT312035B
(en )
1973-12-10
Method for driving a tunnel, adit or the like. and tunneling machine for carrying out the method
CH534778A
(en )
1973-03-15
Cutting head for tunnel boring machines, mining machines and road processing machines
CH448155A
(en )
1967-12-15
Machine for drilling galleries, tunnels, canals or the like
AT222073B
(en )
1962-07-10
Method and device for drilling tunnels, tunnels, shafts, channels or the like.
CH286941A
(en )
1952-11-15
Device for drilling machines for setting the hole depth to be drilled.
AT180582B
(en )
1954-12-27
Facility for lining tunnels, tunnels, shafts or the like.
AT349515B
(en )
1979-04-10
DRIVING DEVICE FOR SIMULTANEOUSLY DRIVING UP AND LINING A TUNNEL OR DGL.
AT178610B
(en )
1954-05-25
Roller chisel drilling tool, in particular for rock and deep drilling
FR1129571A
(en )
1957-01-23
Drilling head for the digging of galleries, bures or drill holes in mines, quarries or construction sites
AT177530B
(en )
1954-02-10
Method and apparatus for producing rock drill bits
FR1063308A
(en )
1954-05-03
Mine tunnel drilling machine
CH277754A
(en )
1951-09-15
Method of grinding the edges of rock drill bits.
AT284899B
(en )
1970-10-12
Device for driving shafts, routes or tunnels
FR1059029A
(en )
1954-03-22
Pneumatic rock puncher
AT308809B
(en )
1973-07-25
Steel track expansion for tunnels, tunnels, shafts or the like produced using the knife advance method.
FR1118051A
(en )
1956-05-31
Process for drilling piles, shafts, mine shafts on all terrains and in all diameters
AT178043B
(en )
1954-03-25
Method for filling projectiles, bombs, mines and the like like
AT174871B
(en )
1953-05-11
Hand tool for holding or moving steel strips, draw-in springs, wires or the like.