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Word: patents (lookup in dictionary) (lookup stats)
Dates: during 1990-1999
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Word Time Machine

Normalized population density for word "patents" throughout decades:

1880s : 0.3270
1890s : 0.0651
1900s : 0.1975
1910s : 0.7104
1920s : 1.9295
1930s : 2.4062
1940s : 1.8867
1950s : 0.9892
1960s : 0.7611
1970s : 0.3753
1980s : 0.9679
1990s : 0.7435
2000s : 0.8145
2010s : 0.4620