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Part VIII.

Inventions of Connecticut

Citizens.

RATIO OF POPULATION TO EACH PATENT

GRANTED.

COMPARISONS, 1876-1905.

INVENTIONS OF CONNECTICUT CITIZENS.

The inventive genius of Connecticut's citizens is too well known to require description here. With a view of giving an exhibit of the number of patents issued to citizens of Connecticut, with the ratio of population to each patent granted, the bureau has been to the pains of examining the reports of the United States Patent Office from 1876 to 1905 inclusivea period of thirty years.

Commencing with the year 1876, it is found that there were 16,239 inventions, for which letters patent were issued in the entire country during that year. or one patent to every 2,398 of population. During the year mentioned, citizens of Connecticut took out patents for 736 inventions, this number being one to every 730 of population based on the most recent. census. It should be said, in this connection, that the number of patents issued to citizens of the District of Columbia was 197, or one to every 668 of population. It should be understood, however, in making comparisons, that many inventors give Washington, D. C., as their place of residence for purposes of convenience and in order to be located near the Patent Office; thus it would seem an unfair comparison. It was determined, however, to use the figures from those localities which show a number of patents granted to members of the communities most nearly approaching the number credited to Connecticut.

Following the method outlined above for the succeeding periods and the figures disclose the information that in 1877, the ratio of patents to population in the United States was one to every 2,959, in Connecticut one to every 885, and in the District of Columbia one to every 1,060 of population.

In 1878, the number was 3,121 of population to each patent issued in the United States, in Connecticut one patent to every 1,015 of population, while the District of Columbia leads with one patent to every 908 of population.

In 1879, the figures for the whole country show that there was one patent issued to every 3,193 of population, while Massachusetts was first with one to every 403 and Connecticut second with one patent to every 945 of population.

In 1880, when the census figures for that year became available, there was one patent issued to every 3,963 of population in the whole country, while Connecticut was first with one patent to every 1,020 of population, Massachusets following with one to every 1,333 of population.

In 1881 there were 15,118 patents issued to citizens of the United States or one to every 3,318 of population. Kansas was first, having to its credit one patent to every 837 of population, Connecticut second with one to every 898 of population and Rhode Island third, having one patent issued to every 994 of its citizens. In 1882, the ratio of population to each patent issued in the United States was 2,808, in Connecticut one patent to every 782 of population and Rhode Island one. to every 980.

In 1883 there were 20,957 separate inventions for which letters patent were issued to citizens of the United States. This was one patent to every 2,393 of population. In the several states the ratio of population to patents issued, Connecticut stood first, one patent having been issued to every 705 of its citizens, the District of Columbia being credited with one patent to every 818, Massachusetts one to every 820, and Rhode Island one to every 845 of population.

In 1884 the ratio of patents issued in the United States to total population was one to every 3,638 citizens, while to citizens of Connecticut there was issued one to every 694 of population. The District of Columbia was credited with one patent to every 858, Rhode Island one to every 909, and Massachusetts one to every 930 of population.

In 1885, the ratio of patents issued to population in the United States was one to every 2,223. Among the states Connecticut was first, having to its credit one patent to every 615

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