US2529648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Form for concrete construction
Assignee: Individual
•
Filing: 1947-11-20
•
Granted: 1950-11-14
•
Expires: 1967-11-20
Abstract
No abstract record available.
Inventors
- 👤 William E Borton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:52
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/08; E04G11/12; E04G11/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |