259 - Sidney Gilchrist THOMAS (1850 - 1885) (6) [1] [2]
On 5 November 1879 THOMAS filed his sixth patent application under the title of:
Innovations dans la fabrication de l’acier et de fer fondu
The patent was granted on 28 September 1880. [3]
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[2] Wikipedia
[3] LU patent No 72