US3060640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cables for prestressing concrete
Assignee: SPAN TENDONS Ltd
•
Filing: 1959-06-11
•
Granted: 1962-10-30
•
Expires: 1979-06-11
Abstract
No abstract record available.
Inventors
- 👤 Harris Alan James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:43
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/08; E04C5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1690467A
Cited
CA497447A
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US1706671A
Cited
FR926505A
Cited
US2580174A
Cited
US2751660A
Cited
US2671158A
Cited
US2921463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |