Which brand's slogan was the first to be officially recognized by linguists as entering common language usage independent of its product, becoming a case study in 'linguistic diffusion'?

In the world of language and linguistics, advertising slogans have had a profound impact on how we communicate and the evolution of everyday speech. Some slogans have been so influential that they've entered our linguistic canon, becoming cultural touchstones that transcend their original marketing purpose. This trivia question explores a pivotal moment when advertising language made a significant linguistic breakthrough, creating a phrase now studied in marketing and linguistics programs worldwide.

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Nike's "Just Do It" (1988)
De Beers' "A Diamond Is Forever" (1948)
Apple's "Think Different" (1997)
Coca-Cola's "The Pause That Refreshes" (1929)