US2887130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchor lug for pipe tension wire
Assignee: Cen-Vi-Ro Pipe Corp
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Filing: 1957-10-10
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Granted: 1959-05-19
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Expires: 1977-10-10
Abstract
No abstract record available.
Inventors
- 👤 Waldo R Kell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:19
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/08; E04C5/12; B; B28; B28B; B28B21/00; B28B21/56; B28B21/60; B28B21/62
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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |