Search examples: Microsoft | 2015 | 2014/10 | 4.12 | 04/20 | 05/26/1980 | Galileo Galilei

Dahlander pole changing motor (technology)

science · 30 November 1896 · 128 years ago

Dahlander pole changing motor The Dahlander pole changing motor is patented.

More science on 30 Nov