4. Gas: heating and illuminating
  5. Generators
  6. Cupola

McDowell-Wellman Company

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Poke hole closure apparatus

Gas: heating and illuminating – Generators – Cupola
Patent

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Process for gasifying pelletized carbonaceous fuels

Gas: heating and illuminating – Processes – Coal and water
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Recovery of oil and gas from oil shale

Mineral oils: processes and products – Products and compositions – Lubricating oils
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