Comments have verified there is a font.
It is a font. It's called "Quadrat Grotesk"
It's not a custom designed logo, it's a custom designed font, called Quadrat Grotesk. It costs $30 for the download, but you can probably find it somewhere for free.
It has a name. I have it on my old computer and I'm trying to find it.
Thank you for the name!
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