US2821069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite wood and concrete pile
Assignee: Individual
•
Filing: 1955-11-07
•
Granted: 1958-01-28
•
Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:46
CPC Classifications
E; E02; E02D; E02D13/00; E02D13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191323531A
Cited
US1838791A
Cited
US1971691A
Cited
US1916702A
Cited
US2290855A
Cited
US2701449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |