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US2619149A
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Assignee: North American Aviation Corp
•
Filing: 1949-05-31
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Granted: 1952-11-25
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Expires: 1969-05-31
Abstract
No abstract record available.
Inventors
- 👤 Lewis J Self
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:26
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1258206A
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US1622590A
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AU458426A
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DE494702C
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US2303059A
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US2357027A
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US2446089A
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US2437105A
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US2485354A
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US2490695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |