Vladislav D. Firstov

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Moscow, SU

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Patents Grantslast 30 patents

Information Patent Grant
Pressure limiting valve, particularly for hydraulic mine props
- Patent number 4,418,715
- Issue date Dec 6, 1983
- Kozponti Banyaszati Fejlesztesi Intezet
- Karoly Balazs
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Pressure valve
- Patent number 4,291,718
- Issue date Sep 29, 1981
- Sergei A. Sanin
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL