US2660049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prestressed concrete structural compression member
Assignee: MABELLE D MANEY
•
Filing: 1947-05-29
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Granted: 1953-11-24
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Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 Mabelle D Maney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:20
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/30; E04C3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |