P

Inventor

HOLBERT MARVIN L

CA5 patents
⚠️ This page may combine multiple inventors who share the name “HOLBERT MARVIN L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

WEATHERFORD LAMB

3 patents
US6405795B2Jun 18, 2002

Subsurface signal transmitting apparatus

WEATHERFORD LAMB42 citations94
US6672383B2Jan 6, 2004

Subsurface signal transmitting apparatus

WEATHERFORD LAMB16 citations91
US7093680B2Aug 22, 2006

Subsurface signal transmitting apparatus

WEATHERFORD LAMB5 citations72

(unassigned)

2 patents
US6209632B1Apr 3, 2001

Subsurface signal transmitting apparatus

56 citations93
US6065544AMay 23, 2000

Method and apparatus for multiple packer pressure relief

32 citations89