US2695671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well fluid measurement
Assignee: Independent-Eastern Torpedo Co
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Filing: 1949-05-06
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Granted: 1954-11-30
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Expires: 1969-05-06
Abstract
No abstract record available.
Inventors
- 👤 Benson M Kingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:16
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/113
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) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |