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No, it doesn't cover the totality of the Smart Cover itself (or any case that folds into a triangle), but Apple has now managed to obtain a patent for one of the accessory's key bits of functionality. First filed in July of 2011 and published by the USPTO today, the patent described as an "accessory device with magnetic attachment" details how magnets can be used in a particular manner to attach a cover to a device (like an iPad) and secure it in place, yet still allow it to be easily released. Again, that doesn't cover all cases that use magnets -- just magnets used in this very specific way. Hit the source link below for all the details in patent-speak.

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Apple snags a patent for the Smart Cover's magnetic know-how