US2913880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling barge
Assignee: Bethlehem Steel Corp
•
Filing: 1955-08-05
•
Granted: 1959-11-24
•
Expires: 1975-08-05
Abstract
No abstract record available.
Inventors
- 👤 Eberhardt C Rechtin
- 👤 James E Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/04; E02B17/08; E02B17/0836; E02B17/0854; F; F16; F16B; F16B2200/00; F16B2200/40; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675681A
Cited
US1494585A
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US2109546A
Cited
US2237387A
Cited
US2352370A
Cited
GB606033A
Cited
US2515540A
Cited
US2603068A
Cited
US2775869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |