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Applicant
DOWELL SCHLUMBERGER INCORPORATEDCorporation
DE
P. O. BOX 2710, TULSA, OK, 74101
US
Attorney
L WAYNE WHITE PATENT DEPT
DOWELL SCHLUMBERGER INC, P O 2710, TULSA, OK 74101, UNITED STATES
FILED
2020
YEARS AGO
6y
CLASSES
1
MADRID FILINGS
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