Template:Patent by decade
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| [[:Category:{{{3}}}-century patents|{{{3}}}-century patents]]: |
[[Category:{{{3}}}-century patents| {{{1}}}{{{2}}}]] [[Category:{{{1}}}{{{2}}}s works|patents]]
| [[:Category:{{{3}}}-century patents|{{{3}}}-century patents]]: |
[[Category:{{{3}}}-century patents| {{{1}}}{{{2}}}]] [[Category:{{{1}}}{{{2}}}s works|patents]]