The SciencesElectrically-Operated Traveling Platforms, Turntables, and WinchesNovember 3, 1906 — Alfred Gradenwitz
The SciencesTwo Instruments for the Composition of Simultaneous MovementsOctober 6, 1906 — Alfred Gradenwitz
The SciencesDevices for Determining the Energy Losses in Iron SheetsJune 23, 1906 — Alfred Gradenwitz
The SciencesThe Magic Sphere--An Illusion Apparatus in Which Curious Optical Effects are Produced by Centrifugal ForceJune 16, 1906 — Alfred Gradenwitz
TechAn Apparatus for Recording the Oscillations of Lighthouse TowersApril 14, 1906 — Alfred Gradenwitz
The SciencesComparison between Torpedo Boat and Merchant Marine EnginesFebruary 10, 1906 — Alfred Gradenwitz