sentences:  Until 1789, he was the businesspartner of Alexandre Sarrasin de Maraise, whose wife Marie-Catherine de Maraise took care of his interests and had an able companionship with Christophe-Philippe Oberkampf.In 1783, the factory received from king Louis XVI of France the title of "royal manufacturer" and in 1787, Oberkampf received from the king the title of squire as well as the right to use arms and his device "Recte et vigilanter (uprightness and vigilance)".In 1785 Oberkampf invented the first machine for printing wallpaper, and shortly afterwards, Nicolas-Louis Robert designed a process for manufacturing endless rolls of wall-paper.