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Check the age of a U.S. Patent, Reissue, 
Design, or Trademark by its number - 1836 to 1960.


 Year

1st
 Patent

1st  Reissue

1st
  Design

1st
Trademark

1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1958
1859
1860
1
110
546
1,061
1,465
1,923
2,413
2,901
3,395
3,873
4,348
4,914
5,409
5,993
6,981
7,865
8,622
9,512
10,358
12,117
14,009
16,324
19,010
22,477
26,642
   
    
1
7
20
30
36
49
60
67
78
91
105
128
158
184
209
229
258
286
337
420
517
643
874
   
   
   

   
   
   
1
15
27
44
103
163
209
258
341
431
540
626
683
753
860
973
1,075
1,183

1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
31,005
34,045
37,266
41,047
45,685
51,784
60,658
72,959
85,503
98,460
110,617
122,304
134,504
146,120
158,350
171,641
185,813
198,733
211,078
223,211
1,106
1,253
1,369
1,596
1,844
2,140
2,430
2,830
3,250
3,784
4,223
4,687
5,216
5,717
6,200
6,831
7,452
8,020
8,529
9,017
1,366
1,508
1,703
1,879
2,018
2,239
2,533
2,858
3,304
3,810
4,547
5,452
6,336
7,083
7,969
8,884
9,686
10,385
10,975
11,567

   
   
   
   
   
   
   
         
     1
122
608
1.099
1,591
2,150
3,288
4,247
5,463
6,918
7,790
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
236,137
251,685
269,820
291,016
310,163
333,394
355,291
375,720
395,305
418,665
443,987
466,315
488,976
511,744
531,619
552,502
574,369
596,467
616,871
640,167
9,523
9,994
10,265
10,432
10,548
10,677
10,793
10,892
10,978
11,053
11,137
11,217
11,298
11,397
11,461
11,520
11,581
11,646
11,706
11,798
12,082
12,647
13,508
14,528
15,678
16,451
17,047
17,995
18,830
19,553
20,439
21,275
22,092
22,994
23,922
25,037
26,482
28,113
29,916
32,055
8,139
8,973
9,920
10,822
11,843
12,910
13,939
15,072
16,131
17,360
18,775
20,537
22,274
23,951
25,757
27,586
29,399
31,070
32,308
33,957
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
664,827
690,385
717,521
748,567
778,834
808,618
839,799
875,679
908,436
945,010
980,178
1,013,095
1,049,326
1,083,267
1,123,212
1,166,419
1,210,389
1,251,458
1,290,027
1,326,899
11,879
11,960
12,070
12,189
12,299
12,428
12,587
12,738
12,906
13,066
13,189
13,346
13,504
13,668
13,858
14,040
14,238
14,417
14,582
14,785
33,813
35,547
36,187
36,723
37,280
37,766
38,391
38,980
39,737
40,424
41,063
42,073
43,415
45,098
46,813
48,358
50,117
51,629
52,836
54,359
35,678
37,606
39,612
41,798
43,956
48,446
59,014
66,892
72,083
76,267
80,506
84,711
89,731
94,796
101,613
107,875
114,666
120,005
124,066
128,274
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1,364,063
1,401,948
1,440,362
1,478,996
1,521,590
1,568,040
1,612,790
1,654,521
1,696,897
1,742,181
1,787,424
1,839,190
1,892,663
1,941,449
1,985,878
2,026,516
2,066,309
2,104,004
2,142,080
2,185,170
15,018
15,257
15,513
15,739
15,974
16,240
16,515
16,841
17,176
17,550
17,917
18,312
18,705
19,038
19,409
19,804
20,226
20,610
20,959
21,311
56,844
60,121
61,748
63,675
66,346
69,170
71,772
74,159
77,347
80,254
82,966
85,903
88,847
91,258
94,179
98,045
102,601
107,738
112,765
118,358
138,556
150,210
163,003
177,848
193,597
207,437
222,401
236,987
251,129
265,655
278,906
290,313
299,926
309,066
320,441
331,338
342,070
353,324
363,536
374,062
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
2,227,418
2,268,540
2,307,007
2,338,081
2,366,154
2,391,856
2,413,675
2,433,824
2,457,797
2,492,944
2,536,016
2,580,379
2,624,046
2,664,562
2,698,434
2,728,913
2,775,762
2,818,567
2,866,973
2,919,443
21,683
21,992
22,242
22,415
22,585
22,706
22,827
22,957
23,068
23,186
23,315
23,449
23,612
23,763
23,918
24,105
24,263
24,413
24,584
24,761
124,503
130,989
134,717
136,946
139,862
143,386
146,165
148,267
152,235
156,686
161,404
165,568
168,527
171,241
173,777
176,490
179,467
181,829
184,204
186,973
384,047
392,581
399,378
404,974
411,001
418,494
426,610
435,590
441,742
443,654
535,490
552,624
568,680
584,242
600,188
618,396
639,154
656,643
671,998
690,716

 

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