Subject-matter index of patents for inventions (Attestati di privative industriali) granted in Italy, from 1848 to May 1, 1882

Subject-matter index of patents for inventions (Attestati di privative industriali) granted in Italy, from 1848 to May 1, 1882

Subject-matter index of patents for inventions (Attestati di privative industriali) granted in Italy, from 1848 to May 1, 1882
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