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The Manufacture of Electrical Conductors

Old Building Material

Completion of the Great Lyman-Haskell Gun

A Brave Life Gone Out

The Telephone Interference Case Decided

The Relations of Patent Experts to the Courts

Picker Fires

The Caterpillar and Its Enemy

Sketching for Mechanics

Parallels for Balancing Pulleys, Etc.

The Telescope at the Trocadero Observatory

Improved Reversing Rail Mill Engines

Natural History Notes

The Turbot, Goldbutt, and Sole

Engineering Inventions

Agricultural Inventions

Miscellaneous Inventions

Mechanical Inventions

Communications Received


  • Departments

    Recent Inventions

  • Index of Inventions

  • New Books and Publications

  • Notes and Queries

  • Business and Personal

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August 04, 1883

20% Sitewide for President's Day