Nikolai Grigorievich Nazarov

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Novosibirsk, SU

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Patents Grantslast 30 patents

Information Patent Grant
Reversiele percussion device
- Patent number 4,819,741
- Issue date Apr 11, 1989
- Alexei D. Terskov
- E21 - EARTH DRILLING MINING
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Method of making built-in-place reinforced concrete piles
- Patent number 4,063,423
- Issue date Dec 20, 1977
- Konstantin Stepanovich Gurkov
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Percussive device for driving holes in soil
- Patent number 3,952,813
- Issue date Apr 27, 1976
- Nikolai Prokhorovich Chepurnoi
- E21 - EARTH DRILLING MINING