US2911795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel for driving pile shells
Assignee: Individual
•
Filing: 1955-12-07
•
Granted: 1959-11-10
•
Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 Walter H Cobi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:53
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/28; E02D7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2741093A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |