The Centennial of the United States Patent System - p368

doi:10.1038/scientificamerican12131890-368

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A School of Ship Building—The Objects and Ideas of Its Founder - pp368 - 370

doi:10.1038/scientificamerican12131890-368a

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A Convenient Ear Trumpet - p370

doi:10.1038/scientificamerican12131890-370

PDF (278 KB)

An Improved Copy Holder - p370

doi:10.1038/scientificamerican12131890-370a

PDF (278 KB)

A Regulator for Dynamos and Motors - p370

doi:10.1038/scientificamerican12131890-370b

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Railroad Sleepers Arranged in Pairs - p371

doi:10.1038/scientificamerican12131890-371

PDF (300 KB)

An Improved Pipe or Flue Cutter - p371

doi:10.1038/scientificamerican12131890-371a

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An Improved Metallic Railway Tie - p371

doi:10.1038/scientificamerican12131890-371b

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A Device to Block Cars on a Grade - p371

doi:10.1038/scientificamerican12131890-371c

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An Improved Velocipede - pp371 - 372

doi:10.1038/scientificamerican12131890-371d

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The Hudson River Bridge - p372

doi:10.1038/scientificamerican12131890-372

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A Pipe Cutter, Beader, and Expander - p372

doi:10.1038/scientificamerican12131890-372a

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A Pug Mill for Brick Makers - p372

doi:10.1038/scientificamerican12131890-372b

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The Manufacture of Salt at Syracuse, N. Y - p373

doi:10.1038/scientificamerican12131890-373

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The Codonophone - p374

doi:10.1038/scientificamerican12131890-374

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The Sebae or Silk Cotton Tree - pp374 - 375

J. F. Coonley

doi:10.1038/scientificamerican12131890-374a

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The Belt Problem - p376

doi:10.1038/scientificamerican12131890-376a

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An Instantaneous Shutter for Hand Cameras - p376

doi:10.1038/scientificamerican12131890-376b

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A Nautico-Terrestrial Velocipede - p377

doi:10.1038/scientificamerican12131890-377

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To Inventors - p379

doi:10.1038/scientificamerican12131890-379a

PDF (543 KB)