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Features

Improved Gang Plow

Water-Spouts in the Mountains

The Needle Gun

Banquet to Cyrus W. Field

Extension Notices

Williams's Potato Washer

Erie Basin Dry Dock Company

Change in the Style of Patents

Wrought Scrap Iron for Forgings

Enlargement of the Scientific American for 1867

Patent Claims

Patent Office Decision--Cultivators

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    Correspondence

  • New Inventions

  • Notes and Queries

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