4. E - Fixed Constructions
  5. 21
  6. D

Rock bolt

E - Fixed Constructions – 21 – D

Patent

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Details

85/2

E21D 21/00 (2006.01) E21D 20/02 (2006.01)

Patent

CA 948899

Williams Chester I.

F - Mech Eng,Light,Heat,Weapons – 16 – B
Inventor

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Williams Chester I.

F - Mech Eng,Light,Heat,Weapons – 16 – B
Inventor

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