71263773
Mar 26, 1928
Aug 7, 1928
APPARATUS FOR MECHANICAL HANDLING OF BULK AND PACKAGED MATERIALS AND CONSTRUCTIVE PARTS, OF SUCH APPARATUS COMPRISING CHAIN, BELT, SCREW, TROLLEY, AND AIR DRIVEN CONVEYORS, CHAIN ELEVATORS, BELT ELEVATORS, MONORAILS, TROLLEYS, HOISTS, AND DRIVE UNITS
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