US2597084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding prestressed concrete structures
Assignee: Individual
•
Filing: 1948-01-13
•
Granted: 1952-05-20
•
Expires: 1968-01-13
Abstract
No abstract record available.
Inventors
- 👤 Huddleston Julian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:08
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874; Y10T29/49888; Y10T29/53; Y10T29/53796; Y10T29/53896; Y10T29/539
Claims Analysis
Total Claims: 0
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US2418580A
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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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |