In 1794 he inaugurated his telegraph with a poem dedicated to the Swedish King on his birthday .
At the same time as Chappe , the Swedish inventor Abraham Niclas Edelcrantz experimented with the optical telegraph in Sweden .
In 1794 Chappe inaugurated Chappe 's telegraph with a poem dedicated to Swedish Swedish King on his birthday .
At the same time as Chappe , the Swedish inventor Abraham Niclas Edelcrantz experimented with the optical telegraph in Sweden .