US2303394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prestressing reinforced concrete
Assignee: Individual
•
Filing: 1940-02-21
•
Granted: 1942-12-01
•
Expires: 1960-02-21
Abstract
No abstract record available.
Inventors
- 👤 Schorer Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:13
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/08; B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/043; B28B23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-11-30 | 1946-06-01 | 1946-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-30 | 1950-06-01 | 1950-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-30 | 1954-06-01 | 1954-12-01 | $7700.00 | Window Closed / Lapsed |