US Patent 10377401 Interchangeable and modular carts

A mobile platform comprising: (a) one or more platforms to support one or more cartridges, (b) one or more compartments within the one or more platforms, (c) one or more vertical supports connected to the one or more platforms, (d) a plurality of wheels connected to a bottom of the one or more platforms, and (e) one or more recesses located in the one or more platforms to receive one or more support accessories, wherein the one or more compartments are shaped to receive the one or more cartridges so that the one or more cartridges are secured to the one or more platforms during movement.