True Desmodromic Systems (in Internal Combustion Engines)

Amalgamated
Ariel (Ron Gardner)
Ariès VT
Arnott (JAP)
Azzariti (Benelli)
Battlogg, Stefan (Porsche)
Bellini
Bignan (Causan)
BMG see: Velocette
BMW 2-valve (Franz Pohn)
BMW 4-valve (Franz Pohn)
BMW R1
BRM (British Racing Motors)
Brüdersdorf, Roland
Capriolo (system à la R. Küchen)
Cenna (old story)
Cenna (new story)
Cosworth
Daimler Benz & Co
Decuir
Delage GP
DEMM
DUCATI
Factory line 1956 - present time
Ducati 125 GP-triple nocker
Ducati 1 cil. production desmo's (1968 - 1975)
Ducati 250-GP-Twin
Ducati paralleltwins
Ducati Bevel-gear L-twins
Ducati Pantah-line
Ducati Four-valve L-twins experimental
Ducati Four-valve L-twins old generation
Ducati Four-valve L-twins new generation Testastretta
Ducati Four-valve L-twin 1098 evoluzione
Ducati Four-valve L-twin Panigale
Ducati new generation aircooled L-twins
Ducati new generation liquidcooled L-twins ST3(valve)
Ducati Desmosedici L-Four Twinpulse GP-engine
Ducati DVT-head
DUCATI 
Non-factory line (private projects)
Ducati Bellini, Paolo 4valve desmo 1 cil. (speedway)
Ducati Del Biondo 4valve desmo 1 cil.
Ducati ErLa
Ducati Mazzucato, Carlo (speedway)
Ducati Gerrit Rook 
Special (Ice-speedway)Schönenberg (Norton)
Miscellaneous
ESO
Ferrari F1 GP
Fiat 401 in tipo 801
Honda
Horak
Howarth
JAP  
Küchen, Richard see: Neander
Lantenhammer, Otto 
Lau Foo Wah 
Mangoletsi 
Maserati 6 cil. 
Maserati V8. 
Mercedes-Benz (W-196 + 300 SLR) 
Michel-Aviation (AM-16 Aero-engine) 
Miller
Minarelli : See Arturo Serri 
Mondial 175 
Morini 
Motom : See Arturo Serri 
Moto Guzzi (Hans Peter Länge) 
MV Agusta 125 cc desmo double knocker
Neander (system Küchen) 
Nerio Pancaldi
Norton Manx (Doug Hele & Joe Craig) 
Norton350(Harry Hinton) 
Norton 350 (Bryan Thomas) 
NSU (Ultramax) (Willi Hartung) 
Orionette
OSCA (Maserati 372 DS) 
Packer Special American Board Racer
Pattakon 
Peeren, Frits & Cees Fick 
Pohn, Franz : see BMW 
Porsche 753 GP
RudgeDDS (David Downer Special) 
Scarab (Reventlow) 
Schneider (system Michaux) 
Serri, Arturo 
Takegawa Honda Monkey Special 
Toyota F1-research engine 
Treen 350 cc research engine 
Unknown Tractor (1904)
Vagova (Vareille) 
Velocette (patented by BMG)