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Extracts from the Letter of the Hon. Benjamin Butterworth, Commissioner of Patents, to the Cincinnati Convention of Inventors

Extracts from the Letter of the Hon. Benjamin Butterworth, Commissioner of Patents, to the Cincinnati Convention of Inventors

  • 期刊名称Scientific American
  • 卷第50卷
  • 期第14期
  • 印刷ISSN0036-8733
  • 文件大小546.64KB
  • 发表时间1884-4-5
  • DOI10.1038/scientificamerican04051884-209
  • 页码209-210
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