|
U.S. Patent
Dating Chart
PATENT
DATES FOR MECHANICAL OPERATION
Use this list to date
when an item was patented.
*Manufacturing date can be different!
|
Patent
Number
|
Year
|
Patent
Number
|
Year
|
Patent
Number
|
Year
|
|
1
|
1836
|
333,494
|
1886
|
2,026,516
|
1936
|
|
110
|
1837
|
355,291
|
1887
|
2,026,516
|
1937
|
|
546
|
1838
|
375,720
|
1888
|
2,066,309
|
1938
|
|
1,106
|
1839
|
395,305
|
1889
|
2,104,004
|
1939
|
|
1,465
|
1840
|
418,665
|
1890
|
2,142,080
|
1940
|
|
1,923
|
1841
|
443,987
|
1891
|
2,185,170
|
1941
|
|
2,413
|
1842
|
466,315
|
1892
|
2,227,418
|
1942
|
|
2,901
|
1843
|
488,976
|
1893
|
2,268,540
|
1943
|
|
3,395
|
1844
|
511,744
|
1894
|
2,307,007
|
1944
|
|
3,873
|
1845
|
531,619
|
1895
|
2,338,081
|
1945
|
|
4,348
|
1846
|
552,502
|
1896
|
2,391,856
|
1946
|
|
4,914
|
1847
|
574,369
|
1897
|
2,413,675
|
1947
|
|
5,409
|
1848
|
596,467
|
1898
|
2,433,824
|
1948
|
|
5,993
|
1849
|
616,871
|
1899
|
2,457,797
|
1949
|
|
6,981
|
1850
|
640,167
|
1900
|
2,492,944
|
1950
|
|
7,865
|
1851
|
664,827
|
1901
|
2,536,016
|
1951
|
|
8,622
|
1852
|
690,385
|
1902
|
2,,580,379
|
1952
|
|
9,512
|
1853
|
717,521
|
1903
|
2,624,046
|
1953
|
|
10,358
|
1854
|
748,567
|
1904
|
2,664,562
|
1954
|
|
12,117
|
1855
|
778,834
|
1905
|
2,698,434
|
1955
|
|
14,009
|
1856
|
808,618
|
1906
|
2,728,913
|
1956
|
|
16,324
|
1857
|
839,799
|
1907
|
2,775,752
|
1957
|
|
19,010
|
1858
|
875,679
|
1908
|
2,818,973
|
1958
|
|
22,477
|
1859
|
908,436
|
1909
|
2,866,973
|
1959
|
|
26,642
|
1860
|
945,010
|
1910
|
2,919,443
|
1960
|
|
31,005
|
1861
|
980,178
|
1911
|
2,966,681
|
1961
|
|
34,045
|
1862
|
1,013,095
|
1912
|
3,015,103
|
1962
|
|
37,266
|
1863
|
1,049,326
|
1913
|
3,070,801
|
1963
|
|
41,047
|
1864
|
1,083,267
|
1914
|
3,116,487
|
1964
|
|
45,685
|
1865
|
1,123,212
|
1915
|
3,163,865
|
1965
|
|
51,784
|
1866
|
1,166,419
|
1916
|
3,226,729
|
1966
|
|
60,658
|
1867
|
1,210,389
|
1917
|
3,295,143
|
1967
|
|
72,959
|
1868
|
1,251,458
|
1918
|
3,360,800
|
1968
|
|
85,503
|
1869
|
1,290,027
|
1919
|
3,419,907
|
1969
|
|
98,460
|
1870
|
1,326,899
|
1920
|
3,487,470
|
1970
|
|
110,617
|
1871
|
1,364,063
|
1921
|
3,551,909
|
1971
|
|
122,304
|
1872
|
1,401,948
|
1922
|
3,631,539
|
1972
|
|
134,504
|
1873
|
1,440,362
|
1923
|
3,707,729
|
1973
|
|
146,120
|
1874
|
1,478,996
|
1924
|
3,781,914
|
1974
|
|
158,350
|
1875
|
1,521,590
|
1925
|
3,858,241
|
1975
|
|
171,641
|
1876
|
1,568,040
|
1926
|
3,930,271
|
1976
|
|
185,813
|
1877
|
1,612,700
|
1927
|
4,000,520
|
1977
|
|
198,733
|
1878
|
1,654,521
|
1928
|
4,065,812
|
1978
|
|
211,078
|
1879
|
1,696,897
|
1929
|
4,131,952
|
1979
|
|
223,211
|
1880
|
1,742,181
|
1930
|
4,180,867
|
1980
|
|
236,137
|
1881
|
1,787,424
|
1931
|
4,242,757
|
1981
|
|
251,685
|
1882
|
1,839,190
|
1932
|
4,308,622
|
1982
|
|
269,820
|
1883
|
1,892,663
|
1933
|
4,366,579
|
1983
|
|
291,016
|
1884
|
1,941,449
|
1934
|
4,423,523
|
1984
|
|
310,163
|
1885
|
1,985,878
|
1935
|
4,490,885
|
1985
|
The
United States patent number for each year is the first patent issued
that calendar year.
*Always
remember, 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, are
usually designated with a D in the number.
|
Design
Patent Number
|
Year
|
Design
Patent Number
|
Year
|
Design
Patent Number
|
Year
|
|
1
|
1843
|
17,995
|
1888
|
88,847
|
1933
|
|
15
|
1844
|
18,830
|
1889
|
91,258
|
1934
|
|
27
|
1845
|
19,553
|
1890
|
94,179
|
1935
|
|
44
|
1846
|
20,439
|
1891
|
98,045
|
1936
|
|
103
|
1847
|
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