Before revision: The alkali-metal thermal-to-electric converter (AMTEC ) , originally called the sodium heat engine (SHE) was invented by Joseph T. Kummer and Neill Weber at Ford in 1966, and is described in US Patents , , and .
After revision: An alkali-metal thermal-to-electric converter (AMTEC , originally called the sodium heat engine (SHE) was invented by Joseph T. Kummer and Neill Weber at Ford in 1966, and is described in US Patents , , and .