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The democratization of invention : patents and copyrights in American economic development, 1790-1920 /

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  • "The democratization of invention : patents and copyrights in American economic development, 1790-1920"
  • "The democratization of invention patents and copyrights in American economic development, 1790-1920 /"
  • "The Democratization of invention : patents and copyrights in American economic development, 1790-1920 /"
  • "The democratization of invention : patents and copyrights in American economic development, 1790-1920 /"
  • "The democratization of invention : patents and copyrights in American economic development, 1790-1920 /"@en