| 17.5.1879 |
born in Köslin |
| 1895 |
Construction of the first model plane |
| 1900 |
Mechanical engineering training in Gevenbroich/Cologne |
| 1900-1904 |
Polytechnic Berlin |
| 1903 |
Construction of his first motorcycle in Köslin |
| 1905 |
Foundation his Grade-motor-factory in Magdeburg |
| 1907 |
Construction of the first triplane |
| 28.10.1908 |
First flight with his triplane in Magdeburg |
|
| 14.8.1909 |
Moved his factory and his monoplane to Bork (now Borkheide) |
| 17.8.1909 |
first flight with his monoplane "Libelle"(dragon fly) in Bork |
| 30.10.1909 |
Winner of the "Lanz-Price of aviation" in Johannisthal
then air displays in Hamburg, Bremen, Breslau and Magdeburg |
| Dec. 1909 |
Construction begin of the first aircraft factory in Bork |
| Febr. 1910 |
Inauguration of the pilot school in Bork |
| 1.5.1910 |
Begin of aeroplane construction |