US2920456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete piles and methods for forming and installing same
Assignee: Raymond International Inc
•
Filing: 1956-04-24
•
Granted: 1960-01-12
•
Expires: 1976-04-24
Abstract
No abstract record available.
Inventors
- 👤 John T Hazak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:22
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/22; E02D5/24; E02D5/30; E02D5/52; E02D5/523
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US771594A
Cited
FR400137A
Cited
US1348994A
Cited
US1366179A
Cited
US1847854A
Cited
US1926962A
Cited
GB538647A
Cited
US2554896A
Cited
US2706498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |