 Complete the following phrase:  , Engraver to the King, took him into his workshop, where he completed a seven-month training course; engraving portraits for art dealers and providing some illustrations for the publisher, . In 1740, with some assistance from Hyacinthe Rigaud, he became self-employed. In 1742, King Louis XV officially granted permission for Protestants to attend the Académie Royale. The following year, however, he accepted an offer to become a court engraver back in Berlin. He returned there in the middle of the 