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Voroshilovgradsky Mashinostroitelny Instit

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    Gate valve
    • Patent number 4,671,487
    • Issue date Jun 9, 1987
    • Voroshilovgradsky Mashinostroitelny Instit
    • Boris F. Bragin
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

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