US2741093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core for driving pile shells
Assignee: RAYMOND CONCRETE PILE CO
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Filing: 1952-03-01
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Granted: 1956-04-10
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Expires: 1972-03-01
Abstract
No abstract record available.
Inventors
- 👤 Warren N Riker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/28; E02D7/30; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1024; Y10T279/1029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |