Patent Number Date Guide, 1859 - 1960

Here is a handy guide for finding the approximate date of your set. The following table lists the last patent number used during each year. Be advised that some items were manufactured for many years after the intial patent issue. If no other source of information is available this should help narrow it down.

Year	Pat No	Year	Pat No	Year	Pat No
1859	22477	1892	466315	1927	1654521
1860	26642	1893	488976	1928	1696897
1861	31005	1894	511744	1930	1742181
1862	34045	1895	531619	1931	1787424
1863	37266	1896	552502	1932	1839190
1864	41047	1897	574369	1933	1892663
1865	45686	1898	596467	1934	1941449
1866	51784	1899	616871	1935	1985878
1867	60685	1900	640167	1936	2026516
1868	72959	1901	664827	1937	2066309
1869	85503	1902	690385	1938	2104004
1870	98460	1903	717521	1939	2142080
1871	110617	1904	748567	1940	2185170
1872	122304	1905	778834	1941	2227418
1873	134504	1906	808618	1942	2268540
1874	146120	1907	839799	1943	2307007
1875	158350	1908	875679	1944	2338081
1876	171641	1911	980178	1945	2366154
1877	185813	1912	1013095	1946	2391856
1878	198733	1913	1049326	1947	2413675
1879	211078	1914	1083267	1948	2433824
1880	223210	1915	1123212	1949	2457797
1881	240373	1916	1166419	1950	2492944
1882	254836	1917	1210389	1951	2536016
1883	269820	1918	1251458	1952	2580379
1884	291016	1919	1290027	1953	2624046
1885	310168	1920	1329352	1954	2664592
1886	353494	1921	1364063	1955	2698439
1887	355291	1922	1401948	1956	2728913
1888	375720	1923	1440362	1957	2775762
1889	395305	1924	1521590	1958	2818567
1890	418665	1925	1568040	1959	2866973
1891	443987	1926	1612790	1960	2919443

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