Patent US2954828A successfully refreshed from Google Patents.
US2954828A
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US
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Laminated airfoil structure
Assignee: Sud Aviation Societe Nationale de Constructions Aerdnaettiques
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Filing: 1954-06-10
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Granted: 1960-10-04
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Expires: 1974-06-10
Abstract
No abstract record available.
Inventors
- 👤 Marchetti Charles Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:41
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0025; B29D99/0028; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1433729A
Cited
US2183158A
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US2621140A
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US2445290A
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US2376653A
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US2414125A
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US2467031A
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US2574651A
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US2644537A
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US2674327A
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US2655459A
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US2620884A
Cited
US2771144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |