Category:Inventions by century See also: Category:Inventors by century Subcategories This category has the following 7 subcategories, out of 7 total. 0–9 15th-century inventions (1 C, 2 P) 16th-century inventions (1 C, 4 P) 17th-century inventions (2 C, 9 P) 18th-century inventions (1 C, 20 P) 19th-century inventions (2 C, 115 P) 20th-century inventions (2 C, 128 P) 21st-century inventions (1 C, 22 P)
