Communications: electrical – Selective – Interrogation response
Patent
1977-12-09
1979-08-21
Blum, Theodore M.
Communications: electrical
Selective
Interrogation response
73516R, G01V 116
Patent
active
041655036
ABSTRACT:
A hydrostatic seismic sensor including a sensing mass suspended on a defoble reservoir containing a sensing fluid and a differential pressure transducer to measure the pressure in the reservoir.
REFERENCES:
patent: 2776829 (1957-01-01), Cockram
patent: 3221562 (1965-12-01), Borcher et al.
Gehman Stacy E.
Holmes Allen B.
Blum Theodore M.
Edelberg Nathan
Elbaum Saul
Gibson Robert P.
The United States of America as represented by the Secretary of
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