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Books by William Richard. (inventor). Hodgkinson

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ORIGINAL PRINTED PATENT APPLICATION NUMBER 21,419 FOR METHOD OF CARBURIZING IRON, IRON ALLOYS, AND MILD STEEL, AND ARTICLES THEREOF. (19090..(THE INVENTOR LIVED AT 89, SHOOTERS HILL ROAD, BLACKHEATH).
ORIGINAL PRINTED PATENT APPLICATION NUMBER 21,419 FOR METHO…
By: William Richard. (inventor). Hodgkinson
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