US3457687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means of depressing and/or holding-down pre-tensioning tendons in pretensioned concrete members employing draped,harped or depressed tendons
Assignee: ALEXANDER L JACOBUS
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Filing: 1968-04-03
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Granted: 1969-07-29
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Expires: 1988-04-03
Abstract
No abstract record available.
Inventors
- 👤 Alexander L Jacobus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:46
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/08; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1457; Y10T24/1459; Y10T24/1473
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |