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US2631819A
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Fair-lead for mine anchors
Assignee: Individual
•
Filing: 1942-06-19
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Granted: 1953-03-17
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Expires: 1962-06-19
Abstract
No abstract record available.
Inventors
- 👤 Robert C Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:58
CPC Classifications
F; F42; F42B; F42B22/00; F42B22/10; Y; Y10; Y10S; Y10S277/00; Y10S277/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US162445A
Cited
US1314660A
Cited
US1286964A
Cited
US1697814A
Cited
US1800578A
Cited
US2238398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |