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Title
French patent for improvements to telescope and photographic lenses. No 217186
Reference
198028/2/4
Date
1891
Creator
JH Dallmeyer Ltd
Language
English
Subject
France

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Records of JH Dallmeyer Limited
contains 16 parts
- Foreign Patents: certificates
  contains 15 parts
  - French patent for improvements to telescope and photographic lenses. No 217186

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