4. E - Fixed Constructions
  5. 21
  6. B

Wellhead connector

E - Fixed Constructions – 21 – B

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Details

166/50, 166/51.3

E21B 33/038 (2006.01)

Patent

CA 714892

John A. Haeber

E - Fixed Constructions – 21 – B
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Lloyd G. Otteman

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Raymond F. Perner

E - Fixed Constructions – 21 – B
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Richard J. Bauer

E - Fixed Constructions – 21 – B
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Na

G - Physics – 21 – G
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Shell Oil Company

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