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American Industries--No. 82

Another Case of Expanded Reissue

Comet Seeking

The Relation of the Government to Patentees

The Scientific Results of the Jeannette Expedition

Steam Boiler Notes

Ten Years' Progress in Iron and Steel Production

Mechanical Inventions

Supplying Steam Boilers with Water

Ader's Magnifying Telephone

Agricultural Inventions

Improved Portable Engine

The Symbolical Signs of the Planets

Grebes and Their Nests

Miscellaneous Inventions

Engineering Intentions


  • Departments

    Recent Inventions

  • New Inventions

  • Index of Inventions

  • Business and Personal

  • Notes and Queries

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