Patent US4778349A successfully refreshed from Google Patents.
Patent US3288219A successfully refreshed from Google Patents.
US3288219A
Expired / Lapsed
US
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Well packing apparatus
Assignee: Schlumberger Well Surveying Corp
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Filing: 1964-06-11
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Granted: 1966-11-29
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Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 David E Young
- 👤 Howard L Mcgill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:10
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/12955
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2881841A
Cited
US3142339A
Cited
US3136364A
Cited
US3211227A
Cited
US3233675A
Cited
US3195642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |