Discovery timeline

112 designs, each placed at the year of its cited primary source. 138 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. 1827

  18. 1829

  19. 1832

  20. 1834

  21. 1835

  22. 1838

  23. 1842

  24. 1850

  25. 1851

  26. 1853

  27. 1857

  28. 1863

  29. 1865

  30. 1873

  31. 1877

  32. 1878

  33. 1887

  34. 1888

  35. 1897

  36. 1901

  37. 1902

  38. 1905

  39. 1909

  40. 1911

  41. 1912

  42. 1913

  43. 1916

  44. 1918

  45. 1920

  46. 1921

  47. 1922

  48. 1925

  49. 1926

  50. 1927

  51. 1928

  52. 1931

  53. 1932

  54. 1933

  55. 1934

  56. 1935

  57. 1936

  58. 1937

  59. 1939

  60. 1941

  61. 1944

  62. 1948

  63. 1949

  64. 1951

  65. 1956

  66. 1957

  67. 1961

  68. 1967

  69. 1968

  70. 1970

  71. 1974

  72. 1975

  73. 1976

  74. 1995

  75. 1998

  76. 2003

  77. 2006

  78. 2016