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David J. O'Harra
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David J. O'Harra
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Name/Title:
Patent Model - Improvement in Furnaces for Roasting Ores
Maker and role:
David O'Harra, Patentee, J. Ferguson, Assignee, Peterson & Olsson, Maker
Production date:
Sep 10 1878
Object number:
2015.14.2686a-d
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