Charles L. Fontenay

atomic engine n.	1956 C. Fontenay Atom Drive in Worlds of If 60/2 The atomic engine produces electrical energy, which accelerates reaction mass.
space relay n.	1958 C. L. Fontenay Conservation in Worlds of If Apr. 68/1 What gets me is that they should have a robot-controlled space relay station orbiting outside the atmosphere.
time fault n.	1959 C. L. Fontenay Bargain Basement in Worlds of If Sept. 61/1 For some reason, that basement door is in a time fault. People from now can go through it into the future and come back.