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Jack L. Popham received US Patent No. 2,830,948 on April 15, 1958, filed January 30, 1956.
The patent's description opens (from the scanned text):
This invention relates to improvements in well working fluids such as those used in drilling and fracturing oil and gas wells, and more particularly; but not by way of .limitation,'tolan improved oil base drilling mud. -In drilling oil. and gas wells bythe rotary method, a fluid (usually called-drilling mud) is circulated down through the drill string and returned to the 'surface through the annulus between-the-drill'string and'the well bore being formed.
- Author
- Jack L. Popham
- Published by
- US Patent Office
- Series
- US Patent No. 2,830,948
- Date
- April 15, 1958
- Library no.
- ACL Doc 23859 · asbestosclaims.law/library/23859
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 426 KB
Where it was listed
- Asbestos, May 1958, in its patents department (the year's issues)
Cite this document
Jack L. Popham. “Well working composition (US Patent 2,830,948, 1958).” April 15, 1958. US Patent No. 2,830,948. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23859. https://asbestosclaims.law/library/23859.
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