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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/159/01/13
LevelItem
TitleLetter from W Watson & Sons Ltd, Scientific instrument makers
Date15/9/1909
DescriptionThey feel that their firm is too specialised to exploit Ross' ear plugs properly.
AccessStatusOpen
LanguageEnglish
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