US2812641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submarine pipe line repair bell
Assignee: Individual
•
Filing: 1954-04-26
•
Granted: 1957-11-12
•
Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 Hartwell A Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:05
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/34; B63C11/36; B63C11/38; B63B; B63B17/00; B63B17/0018; F; F16; F16L; F16L1/00; F16L1/26; B63C11/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1023541A
Cited
US1129615A
Cited
US1706687A
Cited
US2080271A
Cited
US2370782A
Cited
US2667751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |