Patent US3410136A successfully refreshed from Google Patents.
US3410136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential temperature well logging apparatus
Assignee: Halliburton Logging Services Inc
•
Filing: 1966-08-15
•
Granted: 1968-11-12
•
Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 Johns Earl
- 👤 Lowrie Gerald Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:51
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/103; E21B47/06; E21B47/07
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |