US2939292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caisson for submerged pipelines
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-03-10
•
Granted: 1960-06-07
•
Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Law William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:36
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/26; B; B63; B63C; B63C11/00; B63C11/34; B63C11/44; E; E02; E02D; E02D29/00; E02D29/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189315020A
Cited
US702324A
Cited
US859931A
Cited
US2636354A
Cited
US2667751A
Cited
US2791019A
Cited
US2812641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |