In the 1930s, naphtha was the primary fuel for lighters. Naphtha is on oily liquid that is a petroleum derivative. During the thirties and forties a new concept was being developed in lighters.
We cannot be sure on who conceived this idea, but we know that Ronson began to mass produce portable lighters that used butane as the fuel. There were butane lighters that existed in 1935, but they were a rarity. The odds are against finding one, as butane lighters were in a development stage, versus a production stage.
Thanks for that great question.
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