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Record

  •   GB 0809 Ross - Ross, Col Sir Ronald (1857-1932)
    •   159 - Material on Ross' inventions including ear plugs and a clinical automatic thermometer
      • 01 - Material on the invention of ear plugs by Ross
Ref NoGB 0809 Ross/159/01/25
LevelItem
TitleLetter from WP Thomson & Co, Patent Agents
Date15/11/1909
DescriptionRoss' provisional patent has nearly expired and ask for instructions
AccessStatusOpen
LanguageEnglish
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