4. Hydraulic and earth engineering
  5. Underground passageway, e.g., tunnel
  6. Lining

Jack Kennedy Metal Products & Buildings, Inc.

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Method of and apparatus for reducing sulfur in combustion gases

Gas separation: processes – With control responsive to sensed condition – Electric or electrostatic field
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Method of sealing off a mine passageway

Mining or in situ disintegration of hard material – Processes – Mine safety
Reexamination Certificate

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Method of supporting mine walls and installing a mine stopping

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel
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Mine door installation

Movable or removable closures – With operator for movably mounted closure – Operating lever or link and closure swing about parallel axes
Reexamination Certificate

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Mine stopping

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1152891

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