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Vacuum insulated dewar flask

Wells – Processes – Heating – cooling or insulating
Reexamination Certificate

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Vacuum pumping of conductor-in-conduit heaters

Wells – Processes – Heating – cooling or insulating
Reexamination Certificate

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Vacuum pumping of conductor-in-conduit heaters

Wells – Processes – Heating – cooling or insulating
Reexamination Certificate

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Viscid oil well completion

Wells – Processes – Heating – cooling or insulating
Patent

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Visicous oil recovery using steam in horizontal well

Wells – Processes – Heating – cooling or insulating
Patent

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