DENSITROL
PLUMMET TYPE DENSITY MEASURING, DENSITY INDICATING AND DENSITY CONTROLLING INSTRUMENTS AND PARTS THEREOF (FOR USE IN MEASURING AND/OR INDICATING AND/OR CONTROLLING THE DENSITY OF LIQUIDS, HOMOGENEOUS LIQUID MIXTURES, AND HOMOGENEOUS MIXTURES OF ONE OR MORE LIQUIDS AND FINELY DISPERSED SOLIDS
Expired · May 29, 1950 · 71598322 ·