US2970406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchorages of rod shaped tie members of prestressed concrete
Assignee: Walter Bau AG
•
Filing: 1955-06-15
•
Granted: 1961-02-07
•
Expires: 1975-06-15
Abstract
No abstract record available.
Inventors
- 👤 Finsterwalder Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:57
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/08; E04C5/12; E04C5/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1967391A
Cited
US903909A
Cited
US2137718A
Cited
GB612324A
Cited
DE839026C
Cited
FR1011997A
Cited
GB660438A
Cited
FR1019520A
Cited
US2695754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |