Patented
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 (Ducati)
Cosworth
DABEGsteamengine
Daimler
~~~~~~Delage GP
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 4-valve Norton see: Schönenberg
~~~~~~NSU (Ultramax) (Willi Hartung)
OSCA (Maserati 372 DS)
~~~~~~Peeren, Frits & Cees Fick
~~~~~~Pegaso (Ricart)
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)