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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/159/01/32
LevelItem
TitleLetter from Charles Baker, Scientific instrument makers
Date18/1/1910
DescriptionEncloses a proof of the advertising circular and that he will send a sample of the ear plugs when they are made up. Inquires about a royalty but that very little profit will be made until a hundred or more are sold
AccessStatusOpen
LanguageEnglish
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