Specification of patent for "Improvements in the Valve Gear of Three and Four-cylinder Locomotives" by Harold Holcroft

PART OF:
Patents
Made:
1921-02-28
part of archive:
Papers of Harold Holcroft
maker:
Holcroft, Harold

Provisional specification for a patent by Harold Holcroft

Details

Extent:
1 document
Identifier:
HOL/3/3

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