Abraham Gien

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Swartruggens, Transvaal, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Down the hole hammer equipment
- Patent number 5,080,179
- Issue date Jan 14, 1992
- P. G. Drilling Equipment & Accessories
- Abraham Gien
- E21 - EARTH DRILLING MINING
Information Patent Grant
Extraction device for pneumatically actuated drilling tools
- Patent number 5,065,823
- Issue date Nov 19, 1991
- Abraham Gien
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Valveless pneumatic hammer
- Patent number 4,753,302
- Issue date Jun 28, 1988
- Abraham Gien
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pneumatic percussion machines
- Patent number 4,094,366
- Issue date Jun 13, 1978
- Abraham Gien
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pneumatic percussion machines
- Patent number 3,970,153
- Issue date Jul 20, 1976
- Abraham Gien
- E21 - EARTH DRILLING MINING