MeTique
US
Patent Numbers
US PATENT #'S
US Utility Patent #'s
Issued for the invention of a new and useful process, machine,
manufacture, or composition of matter, or a new improvement thereof, it
is generally good for twenty years from the date of patent application filing.
Before June 8, 1995, the patent protection was 17 years from the patent
date. Utility patents which were in force as of June 8, 1995, now have a term of
17 years from date of patent grant or 20 years from date of filing, whichever is
longer. When using this chart to date jewelry or other objects, remember
that it is not necessarily when it was made, but it does tell you the
earliest date it could have been made. The number is the first used in
each calendar year (# 2092133 would be in 1937).
1999 5,855,021
1998 5,704,062
1997 5,590,420
1996 5,479,658
1995 5,377,359 1955 2,698,434 1915
1,123,212 1875 158,350
1994 5,274,846 1954 2,664,562 1914
1,083,267 1874 140,120
1993 5,175,886 1953 2,624,046 1913
1,049,326 1873 134,504
1992 5,077,836 1952 2,580,379 1912
1,013,095 1872 122,304
1991 4,980,927 1951 2,536,016 1911
980,178 1871 110,617
1990 4,890,927 1950 2,492,944 1910
945,010 1870 98,460
1989 4,794,652 1949 2,457,797 1909
908,436 1869 85,503
1988 4,716,594 1948 2,433,824 1908
875,679 1868 72,959
1987 4,633,526 1947 2,413,675 1907 839,799 1867 60,658
1986 4,562,596 1946 2,391,856 1906
808,618 1866 51,784
1985 4,490,855 1945 2,366,154 1905
778,834 1865 45,685
1984 4,423,523 1944 2,338,081 1904
748,567 1864 41,047
1983 4,366,579 1943 2,307,007 1903
717,521 1863 37,266
1982 4,308,622 1942 2,268,540 1902
690,385 1862 34,045
1981 4,242,757 1941 2,227,418 1901 664,827 1861 31,005
1980 4,180,867 1940 2,185,170 1900
640,167 1860 28,842
1979 4,131,952 1939 2,142,080 1899
616,871 1859 22,477
1978 4,065,812 1938 2,104,004 1898
596,467 1858 19,010
1977 4,000,451 1937 2,066,309 1897
574,369 1857 16,324
1976 3,930,271 1936 2,026,516 1896
552,502 1856 14,009
1975 3,858,191 1935 1,985,878 1895
531,619 1855 12,117
1974 3,781,914 1934 1,941,449 1894
511,744 1854 10,358
1973 3,707,729 1933 1,892,663 1893
488,976 1853 9,512
1972 3,621,539 1932 1,839,190 1892
466,315 1852 8,622
1971 3,551,909 1931 1,787,424 1891
443,987 1851 7,865
1970 3,487,470 1930 1,742,181 1890
418,665 1850 6,981
1969 3,419,907 1929 1,696,897 1889
395,305 1849 5,993
1968 3,360,800 1928 1,654,521 1888
375,720 1848 5,409
1967 3,295,143 1927 1,612,700 1887
355,291 1847 4,914
1966 3,226,729 1926 1,568,040 1886
333,494 1846 4,348
1965 3,163,865 1925 1,521,590 1885 310,163 1845 3,873
1964 3,116,487 1924 1,478,996 1884
291,016 1844 3,395
1963 3,070,801 1923 1,440,362 1883
269,820 1843 2,901
1962 3,015,103 1922 1,401,948 1882
251,685 1842 2,413
1961 2,966,681 1921 1,364,063 1881
236,137 1841 1,923
1960 2,919,443 1920 1,326,899 1880
223,211 1840 1,465
1959 2,866,973 1919 1,290,027 1879
211,078 1839 1,061
1958 2,818,567 1918 1,251,458 1878 198,733 1838 546
1957 2,775,762 1917 1,210,389 1877 185,813 1837 110
1956 2,728,913 1916 1,166,419 1876 171,641 1836 1
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