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

Per-Olof Liljebrand

E - Fixed Constructions – 21 – B

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Inventor

Country: Sweden

Drill tube element

E - Fixed Constructions – 21 – B
Patent

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Drill tube for forming drill strings

E - Fixed Constructions – 21 – B
Patent

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Male portion, drill bit and threaded joint for percussive...

E - Fixed Constructions – 21 – B
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Method, drilling tool and rock drill bit for transferring...

E - Fixed Constructions – 21 – B
Patent

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Rock drill bit and a rock drilling tool

E - Fixed Constructions – 21 – B
Patent

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Thread friction locking device

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-1474327

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