US2677955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced concrete
Assignee: Individual
•
Filing: 1948-02-10
•
Granted: 1954-05-11
•
Expires: 1968-02-10
Abstract
No abstract record available.
Inventors
- 👤 Constantinesco George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:13
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/01; E04C5/012; B; B28; B28B; B28B1/00; B28B1/52; B28B1/523; Y; Y10; Y10S; Y10S52/00; Y10S52/07; Y10T; Y10T428/00; Y10T428/249921
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |