US3416608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retrievable well packer
Assignee: Dresser Industries Inc
•
Filing: 1966-06-27
•
Granted: 1968-12-17
•
Expires: 1986-06-27
Abstract
No abstract record available.
Inventors
- 👤 Morgan L Crow
- 👤 Marion D Kilgore
- 👤 Robert C Pumpelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:57
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1294; E21B33/1291; E21B33/1292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE25639E
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US2632514A
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US2681113A
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US3112795A
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US3277965A
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US3249149A
Cited
US3352362A
Cited
US3338309A
Cited
US3356142A
Cited
US3329210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |