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Recently Patented Inventions
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Notes and Queries
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The Rowell Automatic Railway Safety Stop - p289
doi:10.1038/scientificamerican05101890-289
Ships and Guns Needed for Defense - pp290 - 291
doi:10.1038/scientificamerican05101890-290a
A Device for Automatically Lighting Fires - p292
doi:10.1038/scientificamerican05101890-292a
