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Bell's Photophone

The Prall System of Heating

Patent Royalties on Shoe Machinery

The Restoration of Our Commercial and Naval Marine

Electro-Brass Plating

Automatic Governor for Waste Water Pipes

Engineering Inventions - January 1, 1881

Cremation Temple

The Growth of Large Elms

Mechanical Inventions

Agricultural Inventions

Improved Hinge

Novel Road Engine


By A. W. Roberts


  • Departments

    Recent Inventions - January 1, 1881

  • Business and Personal - January 1, 1881

  • Notes and Queries - January 1, 1881

  • New Books and Publications - January 1, 1881

  • Index of Inventions - January 1, 1881

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January 01, 1881

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