Okay, I will make a few more words about this aircraft.
Although the "Swiss Federal Institute of Technology" states the designer is unknown - he isn't.
And he has been swiss!
Even the financier is known by name, but he wasn't called Dehan.
Then the aircraft was flown in Switzerland and yes, private, not with the army.
It was built in 1913 but not in Switzerland.
Cheers
Aquilius