U.S. Patent Dating Charts For patents on mechanical operation Use this list to date when an item was patented, not made Patent Number Year   Patent Number Year 1 1836   333,494 1886 110 1837   355,291 1887 546 1838   375,720 1888 1,106 1839   395,305 1889 1,465 1840   418,665 1890 1,923 1841   443,987 1891 2,413 1842   466,315 1892 2,901 1843   488,976 1893 3,395 1844   511,744 1894 3,873 1845   531,619 1895 4,348 1846   552,502 1896 4,914 1847   574,369 1897 5,409 1848   596,467 1898 5,993 1849   616,871 1899 6,981 1850   640,167 1900 7,865 1851   664,827 1901 8,622 1852   690,385 1902 9,512 1853   717,521 1903 10,358 1854   748,567 1904 12,117 1855   778,834 1905 14,009 1856   808,618 1906 16,324 1857   839,799 1907 19,010 1858   875,679 1908 22,477 1859   908,436 1909 26,642 1860   945,010 1910 31,005 1861   980,178 1911 34,045 1862   1,013,095 1912 37,266 1863   1,049,326 1913 41,047 1864   1,083,267 1914 45,685 1865   1,123,212 1915 51,784 1866   1,166,419 1916 60,658 1867   1,210,389 1917 72,959 1868   1,251,458 1918 85,503 1869   1,290,027 1919 98,460 1870   1,326,899 1920 110,617 1871   1,364,063 1921 122,304 1872   1,401,948 1922 134,504 1873   1,440,362 1923 146,120 1874   1,478,996 1924 158,350 1875   1,521,590 1925 171,641 1876   1,568,040 1926 185,813 1877   1,612,700 1927 198,733 1878   1,654,521 1928 211,078 1879   1,696,897 1929 223,211 1880   1,742,181 1930 236,137 1881   1,787,424 1931 251,685 1882   1,839,190 1932 269,820 1883   1,892,663 1933 291,016 1884   1,941,449 1934 310,163 1885   1,985,878 1935 The United States patent number for each year is the first patent issued that calendar year.  A patent date is only when something was patented, not when it was actually made, many items were manufactured for many years after it was patented. U.S. Design Patent Dating Chart These Patent's cover the design of an item, and are usually designated with a 'D' in the number The number for each year is the first design patent issued that year Design Patent Number Year Design Patent Number Year 1 1843 17,995 1888 15 1844 18,830 1889 27 1845 19,553 1890 44 1846 20,439 1891 103 1847 21,275 1892 163 1848 22,092 1893 209 1849 22,994 1894 258 1850 23,922 1895 341 1851 25,037 1896 431 1852 26,482 1897 540 1853 28,113 1898 626 1854 29,916 1899 683 1855 32,055 1900 753 1856 33,813 1901 860 1857 35,547 1902 973 1858 36,187 1903 1,075 1859 36,723 1904 1,183 1860 37,280 1905 1,366 1861 37,766 1906 1,508 1862 38,391 1907 1,703 1863 38,980 1908 1,879 1864 39,737 1909 2,018 1865 40,424 1910 2.239 1866 41,063 1911 2,533 1867 42,073 1912 2,858 1868 43,415 1913 3,304 1869 46,098 1914 3,810 1870 46,813 1915 4,547 1871 48,358 1916 5,452 1872 50,117 1917 6,336 1873 51,629 1918 7,083 1874 52,836 1919 7,969 1875 54,359 1920 8,884 1876 56,844 1921 9,686 1877 60,121 1922 10,385 1878 61,748 1923 10,975 1879 63,675 1924 11,567 1880 66,346 1925 12,082 1881 69,170 1926 12,647 1882 71,722 1927 13,508 1883 74,159 1928 14,528 1884 77,347 1929 15,678 1885 80,254 1930 16,451 1886 82,966 1931 17,046 1887 85,903 1932