4. Wells
  5. Packers or plugs
  6. Spaced sealing portions

Marvin D. Smith

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Method of forming a self dissipating snow abatement system

Metal working – Method of mechanical manufacture – Shaping one-piece blank by removing material
Reexamination Certificate

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Reel lock

Locks – Portable – Fetters
Patent

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Self dissipating snow abatement system

Fences – Driftage control
Reexamination Certificate

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Tubing string extension

Wells – Packers or plugs – Spaced sealing portions
Patent

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Profile ID: LFUS-PAI-P-233258

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