Schemes of practical utility
Subtitle: entrepreneurship and innovation among 'great inventors' in the United States, 1790-1865
By: B. Zorina Khan, Kenneth L. Sokoloff.
Series: NBER working paper series on historical factors in long run growth ;; historical paper no. 42
Publisher: National Bureau of Economic Research
Published: 1992
Place of publication: Cambridge, MA
Language: eng
Number of pages: 24
Subjects: Inventors -- United States -- History -- 19th century.; Patents -- United States -- History -- 19th century.; Inventions -- United States -- History -- 19th century.