Before revision: However, I T History states he was paid at least one dollar for what is possibly the most important invention in history, as it also was instrumental in the invention of the LED and the solar cell .
After revision: , both of which Lehovec also pioneered the research ofHowever, I T History states he was paid at least one dollar for what is possibly the most important invention in history, as it also was instrumental in the invention of the LED and the solar cell .