MH

Marvin L. Holbert

WE Weatherford/Lamb: 3 patents #218 of 852Top 30%
LY Lynes: 1 patents #1 of 7Top 15%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Gretna, LA: #4 of 121 inventorsTop 4%
🗺 Louisiana: #945 of 10,876 inventorsTop 9%
Overall (All Time): #755,624 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
7093680 Subsurface signal transmitting apparatus James W. Haslett, Robert E. Smallwood, Frederick N. Trofimenkoff 2006-08-22
6672383 Subsurface signal transmitting apparatus James W. Haslett, Robert E. Smallwood, Frederick N. Trofimenkoff 2004-01-06
6405795 Subsurface signal transmitting apparatus James W. Haslett, Robert E. Smallwood, Frederick N. Trofimenkoff 2002-06-18
6209632 Subsurface signal transmitting apparatus James W. Haslett, Robert E. Smallwood, Frederick N. Trofimenkoff 2001-04-03
6065544 Method and apparatus for multiple packer pressure relief 2000-05-23
4880257 Pressure compensation multi tubular safety joint 1989-11-14
4212562 Method and apparatus for leveling templates for offshore subterranean wells William Bundy Stone 1980-07-15