Discovery timeline

104 designs, each placed at the year of its cited primary source. 146 designs without a dated source are left out.

  1. 1609

  2. 1619

  3. 1638

  4. 1662

  5. 1677

  6. 1687

  7. 1690

  8. 1691

  9. 1696

  10. 1738

  11. 1740

  12. 1772

  13. 1785

  14. 1788

  15. 1804

  16. 1809

  17. 1829

  18. 1832

  19. 1834

  20. 1835

  21. 1838

  22. 1842

  23. 1851

  24. 1853

  25. 1857

  26. 1863

  27. 1865

  28. 1873

  29. 1877

  30. 1878

  31. 1887

  32. 1888

  33. 1897

  34. 1901

  35. 1902

  36. 1905

  37. 1909

  38. 1911

  39. 1912

  40. 1913

  41. 1916

  42. 1918

  43. 1920

  44. 1921

  45. 1922

  46. 1925

  47. 1926

  48. 1927

  49. 1928

  50. 1931

  51. 1932

  52. 1933

  53. 1934

  54. 1935

  55. 1936

  56. 1937

  57. 1939

  58. 1941

  59. 1944

  60. 1948

  61. 1949

  62. 1951

  63. 1957

  64. 1961

  65. 1967

  66. 1968

  67. 1970

  68. 1974

  69. 1975

  70. 1976

  71. 1995

  72. 1998

  73. 2006

  74. 2016