|
JPS615200A
|
|
Apparatus for transporting earth and sand
|
|
JPS6047197A
|
|
Method of curve propulsive construction
|
|
JPS5948597A
|
|
Excavator
|
|
JPS58204297A
|
|
Method and apparatus for drilling ground
|
|
JPS5883799A
|
|
Method of excavating ground and excavator
|
|
JPS5826195A
|
|
Drilling machine
|
|
JPS5822021A
|
|
Vacuum cleaner
|
|
JPS587095A
|
|
Excavator
|
|
JPS5810442A
|
|
Method for making milling machine automatically cyclic
|
|
JPS5677496A
|
|
Method of shielding construction
|
|
JPS5648499A
|
|
Mechanical shield method
|
|
JPS5618187A
|
|
Hume concrete pipe with steel socket
|
|
JPS5617809A
|
|
Rocking screw conveyor
|
|
JPS5618186A
|
|
Hume concrete pipe with sliding material layer
|
|
JPS5616791A
|
|
Sloped sliding material injection hole
|
|
JPS5475131A
|
|
Method of stabilizing pressure in air pressurizing chamber
|
|
JPS5330134A
|
|
Comtrol method of muddy water
|
|
JPS5328928A
|
|
Method of mud return system muddy water construction
|
|
JPS52137115A
|
|
Stock room type sand and soil delivery method and apparatus
|
|
JPS52133101A
|
|
Improvements in hydraulic pumping units for propelling process
|
