71490532
Oct 26, 1945
Mar 4, 1947
BOBBY PINS AND HAIRPINS (SAID BOBBY PINS AND HAIRPINS BEING MORE PARTICULARLY DESCRIBED AS COMPOSED AND MADE OF STEEL, ALUMINITE, AND VARIOUS OTHER METALS, ALLOYS AND MATERIALS, BUT SAID BOBBY PINS AND HAIRPINS ARE NOT MADE OF, PLATED WITH, OR ORNAMENTED WITH PRECIOUS METALS)
Treatment of Materials