US2983021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes and apparatus for the manufacture of concrete articles, particularly of reinforced concrete
Assignee: Industrial Development Co SAL
•
Filing: 1956-02-06
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Granted: 1961-05-09
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Maillard Felix Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:59
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/06; B28B1/00; B28B1/08; B28B1/082; B28B7/00; B28B7/0029; B28B7/0035; B28B7/0044; B28B7/34; B28B7/344; B28B7/40; B28B7/44; B28B7/46; C; C04; C04B; C04B40/00; C04B40/02
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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |