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Correlator for zero crossing pulses obtained from seismograms
US 2,920,306 A
Filed
: 04/12/1954
Issued
: 01/05/1960
Est. Priority Date
: 04/12/1954
Status: Expired due to Term
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Current Assignee
Carl R. Wischmeyer
,
Frank J. Feagin
Original Assignee
Carl R. Wischmeyer
,
Frank J. Feagin
Inventors
Feagin, Frank J.
,
Wischmeyer, Carl R.
Application Number
US03/422,487
Time in Patent Office
2,094 Days
Field of Search
US Class Current
367/40
CPC Class Codes
G01V 1/366
by correlation of seismic s...
G01V 2210/30
Noise handling trace signal...
G06G 7/1914
using a magnetic medium, a ...
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