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Patent US2884067A successfully refreshed from Google Patents.
US2884067A
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Apparatus for treating wells
Assignee: Texaco Inc
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Filing: 1956-08-14
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Granted: 1959-04-28
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Expires: 1976-08-14
Abstract
No abstract record available.
Inventors
- 👤 Alden S Marken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:53
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/068; E21B41/00; E21B41/02; Y; Y10; Y10S; Y10S166/00; Y10S166/902; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2534
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1150673A
Cited
US2773551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |