US2764798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form
Assignee: Individual
•
Filing: 1953-08-24
•
Granted: 1956-10-02
•
Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 John P Huff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:39
CPC Classifications
E; E04; E04G; E04G13/00; E01; E01C; E01C19/00; E01C19/50; E01C19/502; E01C19/506
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1397253A
Cited
US1672760A
Cited
US1833509A
Cited
US1922584A
Cited
US2180842A
Cited
US2492502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |