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Recently Patented Inventions
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The Centennial of the Inauguration of George Washingtion as President of the United States - pp288 - 289
doi:10.1038/scientificamerican05111889-288
Improved Inking Device for Type Writers - p290
doi:10.1038/scientificamerican05111889-290c
A Mirror Attachment for Opera Glasses, Etc - p291
doi:10.1038/scientificamerican05111889-291
A Magnet for Experimentation - p291
M. Hopkins
doi:10.1038/scientificamerican05111889-291a
The Venomous Serpents or Toxicophidia of the United States - pp295 - 296
doi:10.1038/scientificamerican05111889-295
Crude Petroleum for Manufacturing Purposes - p297
doi:10.1038/scientificamerican05111889-297