4. Valves and valve actuation
  5. Blow-out preventers
  6. Radial reciprocating ram

B. R. Pravel

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Combined fishing pliers and cutter

Arms – pyrotechnics – hunting and fishing equipment – Fishing equipment – Net or scoop
Patent

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Eyeglasses holder

Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent

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Fail-safe blowout preventer

Valves and valve actuation – Blow-out preventers – Radial reciprocating ram
Patent

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Lock-down releasing spear assembly

Wells – Grapple and well anchored lifting means
Patent

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Moisture meter

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent

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Profile ID: LFUS-PAI-P-846205

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