Letters patent, No 3695, Charles Madge, Mining Engineer, Invention for improvements in the manufacture of Retorts Muffles and pots for reducing lime and other ores etc. 15 Sep 1879
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- ReferenceGB 216 D/D YIM 3/1/3
- Dates of Creation15 Sep 1879
- Language of MaterialEnglish
- Physical Description1 parchment