U.S. federal trademark · Serial No. 71599880 · Reg. No. 0565211
VARIABLE PRESSURE HYDRAULIC SYSTEMS FOR CONTROLLING THE OPERATING FUNCTIONS OF MACHINES,SUCH AS CRANES, SHOVELS, DRAGLINES, OR THE LIKE, EACH SYSTEM INCLUDING SUCH ELEMENTS AS A SOURCE OF SUPPLY OF FLUID, A PUMP, AN ACCUMULATOR, A PLURALITY OF FLUID MOTORS, A PIPING SYSTEM, AND FLUID FLOW CONTROLLING VALVES
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