US2531791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packer assembly
Assignee: NEIL T BREAUX
•
Filing: 1946-11-29
•
Granted: 1950-11-28
•
Expires: 1966-11-29
Abstract
No abstract record available.
Inventors
- 👤 William F Silvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:59
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1091387A
Cited
US1815376A
Cited
US2136674A
Cited
US2182549A
Cited
US2249171A
Cited
US2426370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |