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US2908139A
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Prestressed masonry structures
Assignee: Individual
•
Filing: 1957-07-23
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Granted: 1959-10-13
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Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 William B Horton
- 👤 Joseph B Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:20
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/02; E02D29/0258; E02D29/0266; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/041; E04C3/00; E04C3/02; E04C3/20; E04C3/22
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |