US2914302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip-form jack
Assignee: SAMPSON CONSTRUCTION CO Inc
•
Filing: 1957-05-27
•
Granted: 1959-11-24
•
Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Darwin L Sampson
- 👤 Daniel L Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:42
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/20; E04G11/22; E04G11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2242431A
Cited
US2596854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |