Patents don't mean anything right up until the moment that they mean everything, so take it as read that none of this could happen. Amazon has, however, registered a patent for a concept that it's calling a "Multi-Level Fulfillment Center for Unmanned Aerial Vehicles." Which is a fancy way of saying that it wants to build enormous cylindrical warehouses at the heart of towns and cities. Rather than delivery folks driving parcels to your home, the building will be jam-packed with drones, which fill fly in and out of the location's many windows.