Another patent teases some kind of foldable device coming from Microsoft

It's been quite the year for foldable devices, though actually getting them on sale has proved a struggle for companies dealing with the cutting-edge tech. Now a newly published patent teases another folding gadget on the way from Microsoft.On the back of rumors earlier this week predicting the arrival a foldable Surface device, we've got a filing with the US Patent and Trademark Office that gives us some idea about what such a device might look like.And it looks very much like a Surface Book bu