71622209
Dec 7, 1951
Apr 28, 1953
CERAMIC COMBUSTION BOATS AND BARGES FOR HOLDING METAL SAMPLES; CERAMIC SHIELDS TO COVER SUCH BOATS; AND CERAMIC COMBUSTION TUBES TO CONTAIN SUCH BOATS DURING COMBUSTION; USED IN DETERMINING THE CHEMICAL ELEMENTS OF FERROUS AND NON-FERROUS METALS
Fancy Goods