US2927436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating an elevated deck drill barge
Assignee: California Research LLC
•
Filing: 1954-04-23
•
Granted: 1960-03-08
•
Expires: 1974-04-23
Abstract
No abstract record available.
Inventors
- 👤 Besse Celestine Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:41
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/021; E02B2017/0056; E02B2017/0073; E02B2017/0082; E02B2017/0086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2248051A
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US2217879A
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US2334992A
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US2327118A
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US2657540A
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US2540878A
Cited
US2603068A
Cited
US2771747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |