Patents for inventions : Abridgements of specifications relating to writing instruments and materials.

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Bibliografiske detaljer
Institution som forfatter: Great Britain. Patent Office
Format: Bog
Sprog:English
Udgivet: Lond. : Office of the Commissioners of Patents for Inventions, 1869, 1882.
Fag:
Indholdsfortegnelse:
  • Pt.1, A.D. 1635-1866. Pt.2, A.D. 1867-1876.