US2726569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedge bolt with slotted end of elliptical cross-section
Assignee: Bethlehem Steel Corp
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Filing: 1951-10-25
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Granted: 1955-12-13
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Expires: 1971-10-25
Abstract
No abstract record available.
Inventors
- 👤 Walter R Penman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:46
CPC Classifications
E; E21; E21D; E21D21/00; E21D21/0026
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) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |