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  • Title
    Specification of patent for "Improvements in the Valve Gear of Three and Four-cylinder Locomotives" by Harold Holcroft
  • Reference
    HOL/3/3
  • Production date
    28-02-1921 - 28-02-1921
  • Creator
    • Holcroft, HaroldBiography
  • Scope and Content
    Provisional specification for a patent by Harold Holcroft
  • Extent
    1 document
  • Level of description
    ITEM
  • Repository name
    National Railway Museum, York