Eduard Petrovich Varnello

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Novosibirsk, SU

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Patents Grantslast 30 patents

Information Patent Grant
Rock-breaking implement for percussive machines
- Patent number 4,291,774
- Issue date Sep 29, 1981
- Boris V. Sudnishnikov
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock-breaking tool for percussive-action machines
- Patent number 4,280,573
- Issue date Jul 28, 1981
- Boris V. Sudnishnikov
- E21 - EARTH DRILLING MINING
Information Patent Grant
Air-operated self-propelling rotary-percussive downhole drill
- Patent number 4,209,070
- Issue date Jun 24, 1980
- Boris V. Sudnishnikov
- E21 - EARTH DRILLING MINING
Information Patent Grant
Air-operated drilling machine or rotary-percussive action
- Patent number 3,978,931
- Issue date Sep 7, 1976
- Boris Vasilievich Sudnishnikov
- E21 - EARTH DRILLING MINING
Information Patent Grant
Self-propelled percussive machine for boring holes
- Patent number 3,942,595
- Issue date Mar 9, 1976
- Boris Vasilievich Sudnishnikov
- E21 - EARTH DRILLING MINING