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. Difference-in-differences analyses compare changes in patenting by U.S. inventors in chemistry for research fields of German … émigrés to the United States with fields of other German chemists. This test suggests that U.S. invention increased by 31 …
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' effects on chemical innovation in the U.S. we compare changes in patenting by U.S. inventors in research fields of émigrés ….S. invention. Inventor-level data indicate that émigrés encouraged innovation by attracting new researchers to their fields, rather …
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Road warriors: the migration and the peddlers -- Road runners: Jewish peddlers in their new worlds -- Along the road: Jewish peddlers and their new-world customers -- Road rage: Jewish peddlers and the perils of the road -- The end of the road: life after peddling -- Legacies of the road: a...
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