Ervin Randermann Jr.

Person

Beasley, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Packer locking apparatus including a time delay apparatus for locki...
- Patent number 5,687,795
- Issue date Nov 18, 1997
- Schlumberger Technology Corporation
- Dinesh R. Patel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Full bore sampler including inlet and outlet ports flanking an annu...
- Patent number 5,361,839
- Issue date Nov 8, 1994
- Schlumberger Technology Corporation
- Michael J. Griffith
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulically set packer useful with independently set straddle pac...
- Patent number 5,058,673
- Issue date Oct 22, 1991
- Schlumberger Technology Corporation
- Laurent E. Muller
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tool for treating subterranean wells
- Patent number 5,020,592
- Issue date Jun 4, 1991
- Dowell Schlumberger Incorporated
- Laurent Muller
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tool for treating subterranean wells
- Patent number 4,913,231
- Issue date Apr 3, 1990
- Dowell Schlumberger
- Laurent Muller
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tubing tester valve apparatus
- Patent number 4,100,969
- Issue date Jul 18, 1978
- Schlumberger Technology Corporation
- Ervin Randermann
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsea master valve apparatus
- Patent number 4,009,753
- Issue date Mar 1, 1977
- Schlumberger Technology Corporation
- Howard L. McGill
- E21 - EARTH DRILLING MINING

Ervin Randermann Jr.

Person

Patents Grantslast 30 patents

Packer locking apparatus including a time delay apparatus for locki...

Full bore sampler including inlet and outlet ports flanking an annu...

Hydraulically set packer useful with independently set straddle pac...

Tool for treating subterranean wells

Tool for treating subterranean wells

Tubing tester valve apparatus

Subsea master valve apparatus