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

Crude oil recovery

E - Fixed Constructions – 21 – B

Patent

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Details

196/69

E21B 43/00 (2006.01) C09K 3/00 (2006.01) C09K 8/524 (2006.01) E21B 37/06 (2006.01)

Patent

CA 980704

Mcdougall Lee A.

Uncategorized
Inventor

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Rossi Albert

C - Chemistry – Metallurgy – 08 – F
Inventor

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Wisotsky Max J.

C - Chemistry – Metallurgy – 10 – L
Inventor

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Exxon Research And Engineering Company

F - Mech Eng,Light,Heat,Weapons – 16 – K
Owner

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