Category:19th-century patents
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Subcategories
This category has the following 8 subcategories, out of 8 total.
A
- Joseph Aspdin (4 F)
Media in category "19th-century patents"
This category contains only the following file.
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Confederate States Patent No. 60 - DPLA - 0ab93fe53647ad134b1769858fab3232.pdf 1,360 × 1,756, 4 pages; 7.33 MB