proof that inventing radio was easier than owning it.
means the tangled legal claims over who actually invented radio, fought in courtrooms for decades after the labs went quiet.
from marconi filed first in 1896, but tesla, popov, and others had prior circuits and claims, so the us supreme court eventually restored tesla's priority in 1943, weeks after his death, partly to dodge a wartime royalty fight with marconi's company.
marconi wireless telegraph co — held dominant patents from 1897, sued rivals for decades
tesla us patent 645576 — 1900 patent later cited to overturn marconi's priority
de forest audion case — 1907 triode patent sparked years of vacuum tube litigation
marconi vs united states — 1943 supreme court case that rewrote radio's invention history