During wartime, Zippos were commonly inscribed with unit crests and other military symbols. Then, in the 1960s, concertgoers started raising the Zippo flame as a salute to the musicians on stage – a gesture that was later dubbed the “Zippo Moment.” Today, the distinctive noise that a Zippo Lighter makes when opened and sparked is a registered trademark, meaning no competitors can produce a lighter that makes the same sound.

‍