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of Union Works, Bear Gardens, London, SE1.
1927 Company founded by Marcel Porn, a Romanian by birth (he died in 1949). Address was Porn and Dunwoody Ltd. of 72-78, Fleet-street, London, E.C.4.
1927 They represented the Motorenfabrik Deutz A.G. interests in Great Britain and Ireland.
Post WWII Produced the Uniporn engine in three sizes up to 12 hp. 
The company was also a manufacturer and installer of lifts.