US2829518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsurface flow meter
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-12-17
•
Granted: 1958-04-08
•
Expires: 1973-12-17
Abstract
No abstract record available.
Inventors
- 👤 Robert C Rumble
- 👤 Patrick H Monaghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:48
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/704; E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127; E21B47/00; E21B47/10; E21B47/113
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US455571A
Cited
US2631242A
Cited
US1780952A
Cited
US2150430A
Cited
US2353382A
Cited
US2434349A
Cited
US2453456A
Cited
US2580182A
Cited
US2617023A
Cited
US2637206A
Cited
US2640936A
Cited
US2739476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |