Patent US2764024A successfully refreshed from Google Patents.
US2764024A
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Apparatus for determining wall temperature of casing
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-01-07
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Granted: 1956-09-25
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Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
- 👤 Robert C Rumble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/06; E21B47/07
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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |