US2698663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer
Assignee: Individual
•
Filing: 1950-12-01
•
Granted: 1955-01-04
•
Expires: 1970-12-01
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:52
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/126; E21B33/1265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1303091A
Cited
US2159640A
Cited
US2189697A
Cited
US2343076A
Cited
US2383453A
Cited
US2507270A
Cited
US2578900A
Cited
US2585706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |