US Patent 3881550 - Page 6 Image - In situ recovery of hydrocarbons from tar sands

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In situ recovery of hydrocarbons from tar sands

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In situ recovery of hydrocarbons from tar sands - US Patent 3881550 - Page 2

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In situ recovery of hydrocarbons from tar sands - US Patent 3881550 - Page 6

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In situ recovery of hydrocarbons from tar sands - US Patent 3881550 - Page 7

In situ recovery of hydrocarbons from tar sands - US Patent 3881550 - Page 6

Patent US3881550 Page 6 of 8


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