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No

Patent Name

Patent No

1

Engineering drilling rig with forward and reverse gear

ZL200420114412.X

2

Gear box of engineering drilling rig

ZL200420114942.4

3

Turning seal device of ZKD

ZL200420114941.X

4

Rotary disc with arc teeth of engineering drilling rig

ZL200520039613.2

5

Auxiliary winch of engineering drilling rig

ZL200520039460.1

6

Multi-function drilling rig

ZL200620043121.5

7

Grab bucket of hydraulic diaphragm wall grab

ZL200620043122.X

8

Zero position adjustment device of hydraulic diaphragm wall grab

ZL200620049464.2

9

Zero adjustment device of hydraulic diaphragm wall

ZL200620049463.8

10

Zero adjustment device of hydraulic diaphragm wall

ZL200620049465.7

11

Rotary drive transmission device of muti-functional drilling rig

ZL200720069396.0

12

Lift up and down guiding rail of device for the underground lateral wall

ZL200820150046.1

13

Corner device of cutting device for the underground lateral wall

ZL200820150049.5

14

Corner device of cutting device for the underground lateral wall

ZL200820150050.8

15

Cutting device for underground lateral wall

ZL200820150051.2

16

Dual cutting bars used for underground lateral wall

ZL200820150052.7

17

Power device for the underground lateral wall

ZL200820150047.6

18

Retaining bracket of the cutting bar for the underground lateral wall

ZL200820150048.0

19

a kind of drilling bit with impaction, ratation and drying residue discharging

ZL200820155936.1

20

a kind of excavation device

ZL200820155937.6

21

a kind of impact grab

ZL200820155938.0

22

a kind of diaphragm wall grab with double winches

ZL200920068970.X

23

a kind of hoisting pulley for diaphragm wall grab

ZL200920070119.0

 
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