A Veteran Inventor. New Article of Commerce. The Restoration of the Patent Office. A Practical Resumption of Specie Payments. 20 BATCHELDER'S BA LANCE DYNAMOMETER., scientific american, 1878-08-31
A Veteran Inventor. New Article of Commerce. The Restoration of the Patent Office. A Practical Resumption of Specie Payments. 20 BATCHELDER'S BA LANCE DYNAMOMETER., scientific american, 1878-08-31
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