Dartt Valve Company, Ltd. Trademarks
DARTT
Filed: April 1, 1996
positive displacement pumps; parts for positive displacement pumps; actuators for positive displacement pumps; valves for…
Owned by: Dartt Valve Company, Ltd.
Serial Number: 75081630
DARTT ZIPP
Filed: August 17, 1998
standing valve cage for use in down-hole rod pumps
Owned by: Dartt Valve Company, Ltd.
Serial Number: 75537054
