US2568330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible ramp for ships
Assignee: Individual
•
Filing: 1945-10-19
•
Granted: 1951-09-18
•
Expires: 1965-10-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Flippin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
B; B63; B63B; B63B27/00; B63B27/14; B63B27/143; B63B19/00; B63B19/08; B63B2019/083; B63B2027/141; B63B35/00; B63B35/08; B63B35/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US34329A
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US185233A
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US374635A
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US785400A
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US939878A
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US1038176A
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US1105537A
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US1150699A
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US1270903A
Cited
US1411320A
Cited
US1568307A
Cited
US1882512A
Cited
GB478253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |