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Improved Air Purifier, Steel Pens, and more

Latest Foreign Intelligence

The Progress Machine Works

Water-Proof Goods

Recent American Patents

Market for the Month

Emerson's Saw Tooth

Improved Current Water Wheel

Raising of a Wreck

Reynolds's Bag Holder

Acquiring Information

Inventor's Associations and the Patent Laws

An Excursion to the Coal Fields

The Difference Between New and Old Ale

Patent Claims

Issued from the United States Patent-Office


  • Departments

    Notes and Queries

  • Correspondence

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