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  Timeline of the Nuclear Age 1930s  1935


Leo Szilard files patent amendment identifying uranium and bromine as "examples for elements from which neutrons can liberate multiple neutrons..." When Szilard learns that the only way for his patents on liberating nuclear energy to be kept secret is to assign them to an agency of the British government, he offers them to the British War Office.

The British War turns down Leo Szilard’s offer to give them his patents on nuclear energy stating, "There appears to be no reason to keep the specification secret so far as the War Department is concerned."