US3514996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for geological surveying
Assignee: Societe Nationale des Petroles dAquitaine SA
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Filing: 1968-09-30
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Granted: 1970-06-02
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Expires: 1988-09-30
Abstract
No abstract record available.
Inventors
- 👤 Robert Coustau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:12
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/08; E21B49/00; E21B49/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |