Durasand Trademarks

DURASAND
Proppant for use in oil well and gas well hydraulic fracturing operations
Registered  ·  July 12, 2018  ·  88034907  · 
durasand
DURASAND
hand tools; namely, abrasive sponges for sanding
Cancelled  ·  March 24, 1993  ·  74371544  ·