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Chemistry
Class Information
Number:
507/144
Name:
Earth boring, well treating, and oil field chemistry
>
Earth boring
>
Contains inorganic component other than water or clay
> Inorganic component is asbestos
Description:
Composition wherein the inorganic component is asbestos.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
4110225
Sealing wells
Aug. 29, 1978
3989630
Low solids shale controlling drilling fluid
Nov. 2, 1976
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