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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/159/01/29
Level
Item
Title
Letter from Charles Baker, Scientific instrument makers
Date
31/12/1909
Description
Apologises for the delay but they have been waiting to hear from a friend at the Patent Office as to whether it is possible to register the silencer now a provisional patent has been taken out. He will write when he hears from his friend
AccessStatus
Open
Language
English
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