Communications: electrical – Selective – Having electron beam device
Patent
1976-07-26
1978-01-17
Birmiel, Howard A.
Communications: electrical
Selective
Having electron beam device
181119, 340 155CP, G01V 114
Patent
active
040694704
ABSTRACT:
A seismic signal is generated having a pattern which is periodically repetitive. The signal within each period has a nonrepetitive pattern and each period has a time duration not less than the time required for the seismic wave to travel to the deepest subsurface strata of interest and back to the detecting location.
REFERENCES:
patent: 3289154 (1966-11-01), Cunningham
patent: 3303458 (1967-02-01), Prickett, Jr. et al.
patent: 3307648 (1967-03-01), Masterson
patent: 3353624 (1967-11-01), Redding
patent: 3697938 (1972-10-01), Taner
Cunningham Allen B.
Miller Edward T.
Birmiel Howard A.
Exxon Production Research Company
Thigpen E. Eugene
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