US3449755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recording well logging signals
Assignee: Schlumberger Technology Corp
•
Filing: 1967-12-27
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Granted: 1969-06-10
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Expires: 1987-12-27
Abstract
No abstract record available.
Inventors
- 👤 Gyula L Samodai
- 👤 John S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:47
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V11/00; G01V11/002; G01V3/00; G01V3/18; G01V3/34; G03; G03B; G03B37/00; G03B37/005
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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |