Patent US3435224A successfully refreshed from Google Patents.
US3435224A
Expired / Lapsed
US
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Downhole system for storing and reading out detector signals for transmission to the surface at relatively low frequency
Assignee: Mobil Oil AS
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Filing: 1965-06-23
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Granted: 1969-03-25
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Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph Zemanek Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:38
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/107; G01V5/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2802951A
Cited
US2856537A
Cited
US2883548A
Cited
US2998521A
Cited
US3050151A
Cited
US3309521A
Cited
US3337746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |