Dunkermotoren address?

[Che Fornusek]

Hi,
I am doing research with a motorized exercycle which is designed for
passive exercise and FES (Functional Electrical Stimulation work).
Inside the exercycle is a motor of the brand type: Dunkermotoren (made
in germany). Basically I'm trying to find out the specifics of this
motor and would greatly appreciate it if anyone could provide me with
information concerning contact adresses or in where this company is
based.

Thanks
Che' Fornusek