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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 No
GB 0809 Ross/159/01/37
Level
Item
Title
Letter from Charles Baker, Scientific instrument makers
Date
22/2/1912
Description
They have had no more of the ear plugs made up but still have a copy of the sample covered with velvet. They will make up samples for sending to the medical press but in view of the lack of interest shown previously, doubt if they will be a commercial success
AccessStatus
Open
Language
English
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