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Pouchin de la Roche, Joseph Baron de und Pouchin de la Roche, Achilles Baron de, in Paris, Patent auf Einführung der Laforest'schen Flachsbrechmaschine in Bayern
Pouchin de la Roche, Joseph Baron de und Pouchin de la Roche, Achilles Baron de, in Paris, Patent auf Einführung der Laforest'schen Flachsbrechmaschine in Bayern