4. Metal treatment
  5. Process of modifying or maintaining internal physical...
  6. Heating or cooling of solid metal

Ralph S. Frost

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Apparatus for air quenching railway heads

Metallurgical apparatus – Means treating solid metal – By contact with gas
Patent

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Locator for rail aligning device

Geometrical instruments – Area integrators – Electrical
Patent

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Method for quenching railway rail heads

Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent

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Profile ID: LFUS-PAI-P-13805

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