Castle Smith
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British chartered patent agent Castle Smith was recorded as being at address:
"Invention" Office, 54 Fleet Street, London, E.C.[1]
Patents for which Castle Smith was the patent agent
- Patent GB-1895-10239 (Inventors: John Marshall, English title: Aerial Machine)
- Patent GB-1909-24794 (Inventors: Olaf Nikola Hamilton, English title: Propeller)
