Patented systems

This list of produced systems mentions (with hyperlinks to their own information pages) the patented systems.
N.B. The non-patented systems are driven to the right by ~~~~~~!!

~~~~~~ Ariel (Ron Gardner)

~~~~~~ Aries

Arnott (JAP)

~~~~~~ Arturo Serri

Azzariti (Benelli)

Ballot

Battlogg, Stefan

Bignan (Causan)

BMG see: Velocette

~~~~~~ BMW 2-valve (Franz Pohn)
~~~~~~ BMW 4-valve (Franz Pohn)
~~~~~~ BMW R1
~~~~~~ BRM (British Racing Motors)

~~~~~~ Capriolo (system à la R. Küchen)

Caprotti

Cenna

Cosworth (Ducati)

DABEG steamengine

Daimler

~~~~~~ Delage GP

DUCATI
. Whole factory line 1956- present time
.. Ducati 125 GP-triple nocker
.. ~~~~~~ Ducati 1 cil. production desmo’s(1968 –
.. ~~~~~~ Ducati 250-GP-Twin
.. ~~~~~~ Ducati paralleltwins
.. ~~~~~~ Ducati Bevel-gear L-twins
.. ~~~~~~ Ducati Pantah-line
.. Ducati Four-valve L-twins
.. Ducati air-cooled new generation 2 & 3 Valve
.. ~~~~~~ Ducati Del Biondo 4valve desmo 1cil.
.. ~~~~~~ Ducati Mazzucato, Carlo(speedway)

~~~~~~ Duesenberg

E.S.O.

~~~~~~ Ferrari F1 GP

Fiat 401 in tipo 801

Hider, P.L.

Horak

~~~~~~ Howarth

JAP

Küchen, Richard see: Neander

Lantenhammer/Sedlbauer

Lau Foo Wah

~~~~~~ Mangoletsi

~~~~~~ Maserati 6 cil.

~~~~~~ Maserati V8.

Mercedes-Benz (W-196)

~~~~~~ Miller

~~~~~~ Mondial

~~~~~~ Morini

Moto Guzzi (Hans Peter Länge)

~~~~~~ MV Agusta 125 cc desmo double knocker

~~~~~~ Nagant

Nash, Lewis

Neander (system Küchen)

Norton Manx (Joe Craig)

~~~~~~ Norton 350 (Bryan Thomas)

~~~~~~ Schönenberg (Norton)Schönenberg 4-valve Norton see: Schönenberg

~~~~~~ NSU (Ultramax) (Willi Hartung)

OSCA (Maserati 372 DS)

~~~~~~ Peeren, Frits & Cees Fick

~~~~~~ Pegaso (Ricart) Pegaso

Pohn, Franz : see BMW

Porsche 753 GP

Prestwich, John Alfred see: JAP

~~~~~~ Rolland-Pilain

Salmson

~~~~~~ Scarab (Reventlow)

Schneider (system Michaux)

~~~~~~ Schönenberg (Norton)

~~~~~~ Treen 350 cc research engine

Vagova (Vareille)

Velocette (patented by BMG)

Doubtful (crank)cases:

~~~~~~ AWO/Simpson

~~~~~~ Bianchi (Lino Tonti)

Honda GP

Pa Norton’s patented system

Semi-Desmodromic Systems:

~~~~~~ Lito

Muller, Jan

~~~~~~ Peugeot L76

~~~~~~ Zedel (Zürcher Lüthi)