Patio Diet Cola
Diet Pepsi was introduced as Patio Diet Cola in 1963.
In 1965, Patio Diet Cola was renamed Diet Pepsi.
The text is almost the same as the 2008 logo.
1996-1998 (Outside North America)
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Compared to all the Diet Pepsi logos, this logo was the shortest-lived, which was in stores for just over two years.
When Pepsi started to rebrand, they used different variants of the logo to fit with the mood and flavor of the drink. For Diet Pepsi, it has a slight grin.
The grinning globe was later replaced with the regular "smiling globe".