US2963764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constructing a prestressed concrete bridge
Assignee: Walter Bau AG
•
Filing: 1955-08-12
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Granted: 1960-12-13
•
Expires: 1975-08-12
Abstract
No abstract record available.
Inventors
- 👤 Finsterwalder Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:17
CPC Classifications
E; E01; E01D; E01D21/00; E01D21/10; E01D21/105; E01D2101/00; E01D2101/20; E01D2101/24; E01D2101/26; E01D2101/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1303741A
Cited
US2712750A
Cited
GB200512A
Cited
GB195570A
Cited
GB338934A
Cited
US2028741A
Cited
US2172703A
Cited
US2185749A
Cited
US2413990A
Cited
FR1039305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |