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The history of the Vaillant Group dates back to 1874, when Johann Vaillant set up a master fitter's business. In 1894 Johann Vaillant patented a new "closed-system" gas-fired bathroom boiler. [3] This was the first device that made it possible to heat water hygienically, without contaminating it with combustion gases.
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Young boy, possibly the brother of the artist, Mezzotint The painter Maria van Oosterwijck, 1671, by Wallerant Vaillant A couple painted by Wallerant Vaillant. ( Gemäldegalerie , Berlin) Wallerant Vaillant (30 May 1623 – 28 August 1677) was a painter of the Dutch Golden Age and one of the first artists to use the mezzotint technique, which ...