US2048253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the manufacture of hollow bodies of reenforced concrete
Assignee: Individual
•
Filing: 1934-02-05
•
Granted: 1936-07-21
•
Expires: 1954-02-05
Abstract
No abstract record available.
Inventors
- 👤 Freyssinet Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/12; Y; Y10; Y10S; Y10S425/00; Y10S425/11
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) | 1939-07-21 | 1940-01-20 | 1940-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-21 | 1944-01-20 | 1944-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-21 | 1948-01-20 | 1948-07-21 | $7700.00 | Window Closed / Lapsed |