For the Inventor, By the Inventor

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Houston, TX, United States of America

Schlumberger Well Services

USPTO Granted Patents = 3

Forward Citations = 67

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4 inventors (with patents filed for the assignee):

Jack F Lands (1 out of 8 patents)

Michael Andrew Montgomery (1 out of 35 patents)

Gary M Lendermon (1 out of 4 patents)

4. James E White (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4868569 - Biphase digital look-ahead demodulating method and apparatus (1989-09-19),

2. 4852067 - Low frequency sonic logging (1989-07-25),

3. 4744424 - Shaped charge perforating apparatus (1988-05-17),

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USPTO Data Jan 1 1976 - Jan 20 2026

3 Patents

#1,196 in Houston, TX

#4,710 in Texas

#72,234 in US

Houston, TX, United States of America

Schlumberger Well Services

Forward Citations = 67

4 inventors:

Jack F Lands (1 out of 8 patents)

Michael Andrew Montgomery (1 out of 35 patents)

Gary M Lendermon (1 out of 4 patents)

4. James E White (1 out of 1 patent)

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