US2963178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine landing assembly
Assignee: Individual
•
Filing: 1957-08-12
•
Granted: 1960-12-06
•
Expires: 1977-08-12
Abstract
No abstract record available.
Inventors
- 👤 Robert D Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:32
CPC Classifications
E; E01; E01D; E01D15/00; E01D15/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US741827A
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US918333A
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US916825A
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US1028454A
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US1882145A
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US2641785A
Cited
US2617131A
Cited
US2803841A
Cited
US2808126A
Cited
US2858055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |