Vladimir Sergeevich Shavyrin

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Gorky, SU

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Patents Grantslast 30 patents

Information Patent Grant
Method of preparation of material for lubrication of external surfa...
- Patent number 3,968,043
- Issue date Jul 6, 1976
- Vladimir Sergeevich Shavyrin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Lubricant composition for drilling pipe
- Patent number 3,957,663
- Issue date May 18, 1976
- Vladimir Sergeevich Shavyrin
- E21 - EARTH DRILLING MINING