US2512831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of concrete piles
Assignee: Individual
•
Filing: 1948-02-25
•
Granted: 1950-06-27
•
Expires: 1968-02-25
Abstract
No abstract record available.
Inventors
- 👤 Holmes Arthur Brannam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:34
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/22; E02D5/34; E02D5/38; E02D5/385
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1501643A
Cited
US1642213A
Cited
US1805265A
Cited
US1900622A
Cited
GB402799A
Cited
FR764668A
Cited
GB482176A
Cited
US2184514A
Cited
GB469716A
Cited
GB541509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |