Mark Identification

RIV

Serial Number

75032311

Filing Date

Dec 14, 1995

Registration Date

Jan 5, 1999

Trademark by

WEATHERFORD/LAMB INC.

Classification Information

manually operated metal control valves for controlling downhole fluid flow between a tubing string and a well annulus

Metal Goods

control valves for controlling downhole fluid flow between a tubing string and a well annulus as part of a downhole completion assembly, typically a zone isolation assembly

Machinery