9 Computer Batch System-Namely, Electric Calculating Machines and Machines for Weighing, Measuring, Signalling, Supervising and Controlling Digesters, Analyzing Machinery for Controlling, Regulating and Analyzing Batch Digesters
11 Machinery to Be Used with Batch Digesters-Namely, Heaters, Steam Generators, Boilers, Dryers, Coolers and Ventilators