Patent JPS5022532A successfully refreshed from Google Patents.
Patent US4472949A successfully refreshed from Google Patents.
US3045751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control method for wells and apparatus therefor
Assignee: Individual
•
Filing: 1958-07-21
•
Granted: 1962-07-24
•
Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Elbert A Rodgers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:23
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1901141A
Cited
US1964912A
Cited
US1992424A
Cited
US2005767A
Cited
US2128475A
Cited
US2142376A
Cited
US2229538A
Cited
US2404341A
Cited
US2844206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |