The Deicke genealogy…
In the period 1907-1933 Arthur Deicke built some (not always successful) light aircraft, but als engines, hydroplanes, …
His aircraft projects:
Biplane glider (1908). Unable to fly.
Typ A (1909/10). Monoplane with 1 x 20 hp RAW and pusher propeller. Covered fuselage. Only short hops.
Typ B (1911). Monoplane with the same 1 x 20 hp RAW and pusher propeller. Open fuselage. Short flights.
Typ C (1911/12). Monoplane as the Typ A, with the same 1 x 20 hp RAW and two pusher propellers. Flew.
Monoplane (1921). With 1 x Hilz engine and pusher propeller. Small nosewheel.
Ente (1922). Single seater canard monoplane with 1 x Anzani (later 1 x Deicke) and pusher propeller.
Sporteinsitzer (1929). Shoulder wing monoplane with 1 x 12 hp Deicke engine. Short flights.
Biplane (1930). Single seater with 1 x 18 hp Deicke engine. Not certified.
ADM-11 (1933). Single seater shoulder wing monoplane with 1 x 22 hp Deicke ADM-7. Registration D-YHEX, but no certification.
Apparently there is only one plane with ADM designation. On the other hand the engine of this plane is also in the ADM series. Possibly Deicke used the ADM designations for all of his technical projects.