372 The Woodworth Patent Extension. Seward's New Patent Bill. The new Steam Frigate Wabash. Philosophy of Wetting Bricks. New Shingle Machine. Recent Foreign Inventions. IMPROVED SHINGLE MACHINE. ION, scientific american, 56-08-02


372 The Woodworth Patent Extension. Seward's New Patent Bill. The new Steam Frigate Wabash. Philosophy of Wetting Bricks. New Shingle Machine. Recent Foreign Inventions. IMPROVED SHINGLE MACHINE. ION, scientific american, 56-08-02


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