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Patent US2676773A successfully refreshed from Google Patents.
US2676773A
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US
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Aircraft insulated fuel tank
Assignee: North American Aviation Corp
•
Filing: 1951-01-08
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Granted: 1954-04-27
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Expires: 1971-01-08
Abstract
No abstract record available.
Inventors
- 👤 Manuel C Sanz
- 👤 Castelfranco James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:11
CPC Classifications
B; B64; B64D; B64D37/00; B64D37/02; B64D37/06; Y; Y10; Y10S; Y10S138/00; Y10S138/02; Y10S138/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1835370A
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US1870595A
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US2150181A
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US2214294A
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US2194301A
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US2318744A
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US2397184A
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US2385146A
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US2520972A
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US2519393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |