US2986008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming concrete piles
Assignee: PETER KIEWIT SONS CO Inc
•
Filing: 1957-10-29
•
Granted: 1961-05-30
•
Expires: 1977-10-29
Abstract
No abstract record available.
Inventors
- 👤 Leo W Ryser
- 👤 Ward W White
- 👤 James D Brown
- 👤 Henry A Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:01
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/22; E02D5/56
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US184900A
Cited
US987266A
Cited
US1338460A
Cited
US1949591A
Cited
US2203881A
Cited
US2357835A
Cited
US2782605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |