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Technological innovations -- Economic aspects -- United States -- History -- 19th century
returned
1
record.
Inventive activity and the market for technology in the United States, 1840-1920
.
by
Lamoreux, Naomi R.
; Cambridge: National Bureau of Economic Research, 1999.
Subject:
Inventions -- Economic aspects -- United States -- History -- 19th century
;
Technological innovations -- Economic aspects -- United States -- History -- 19th century
;
Patent laws and legislation -- Economic aspects -- United States -- History -- 19th century
;
United States -- Economic conditions -- 1865-1918
;
United States -- Economic conditions -- to 1865
.
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