71260898
Jan 30, 1928
Jul 17, 1928
APPARATUS FOR MECHANICAL HANDLING OF BULK AND PACKAGED MATERIALS-NAMELY, CHAIN, BELT, SCREW, TROLLEY, AND AIR DRIVEN CONVEYORS, CHAIN ELEVATORS, BELT ELEVATORS, MONORAILS, TROLLEYS, HOISTS, AND DRIVE UNITS
Yarns and Threads