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Acoustic logging
US 2,396,935 A
Filed
: 11/05/1942
Issued
: 03/19/1946
Est. Priority Date
: 11/05/1942
Status: Expired due to Term
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25
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Current Assignee
John E. Walstrom
Original Assignee
John E. Walstrom
Inventors
Walstrom, John E.
Application Number
US02/464,693
Time in Patent Office
1,230 Days
Field of Search
US Class Current
181/102
CPC Class Codes
E21B 47/107
using acoustic means
G01V 1/143
using mechanical driving me...
G01V 1/46
Data acquisition
Y10S 181/401
Earth
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