4. Wells
  5. Processes
  6. Placing or shifting well part

Andrew B. Campbell

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Door coordinator

Movable or removable closures – Bipartite – center opening – Overlapping meeting edges
Patent

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Door-latch opener

Closure fasteners – Operators with knobs or handles
Patent

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Flush bolt mechanism for double doors

Closure fasteners – Bolts – Sliding
Patent

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Flush bolt mechanism for double doors

Closure fasteners – Bolts – Sliding
Patent

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Jacking mechanism supported by a wellhead

Wells – Processes – Placing or shifting well part
Patent

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Profile ID: LFUS-PAI-P-220136

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