Paul Heylandt
From The Space Library
Christian Wilhelm Paul Heylandt was a German engineer whose expertise was in handling compressed gasses. He filed a multitude of patents on this subject and was instrumental in assisting Max Valier in building his liquid fuelled rocket system in early 1930.
One of Heylandt's patents was filed in January 1921 and was for a liquid oxygen and "carbonaceous substance" carrying missile. Although it looked like a rocket in the patent filing it was a unique design for an explosive shell using liquid oxygen.
Patent DE1439237 for Paul Heylandt's liquid oxygen missile, circa 1921
