F Yang, S Li, D Liu, G Daisong - US Patent App. 29/711,512, 2021 - Google Patents
FIG. 2 is a rear elevation view of thereof; FIG. 3 is a left side elevation view thereof; FIG. 4 is
a right side elevation view thereof; FIG. 5 is a top plan view thereof; and, FIG. 6 is a bottom …