US3384248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unloading system and method
Assignee: Upper Lakes Shipping Ltd
•
Filing: 1965-10-27
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Granted: 1968-05-21
•
Expires: 1985-10-27
Abstract
No abstract record available.
Inventors
- 👤 Jack D Leitch
- 👤 Nolan H Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
B; B63; B63B; B63B27/00; B63B27/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1737343A
Cited
US2288763A
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US2579153A
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US3066809A
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US3077995A
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US3148784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |