71695482
Sep 28, 1955
Jan 29, 1957
INTERNAL COMBUSTION ENGINES, GAS TURBINES, POWER TRANSMISSIONS, AND DRIVE MECHANISMS AND CONTROL DEVICES AND PARTS AND ACCESSORIES THEREOF-NAMELY, GEARS, CLUTCHES, WHEELS, SHAFTS, JOINTS, ARTICULATED SHAFTS; OIL WELL DRILLING MACHINERY AND CONTROL DEVICES THEREFOR
Yarns and Threads