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US2924809A
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Assignee: Northrop Grumman Corp
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Filing: 1957-05-13
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Granted: 1960-02-09
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Expires: 1977-05-13
Abstract
No abstract record available.
Inventors
- 👤 Robert H Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:25
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/02; H05K7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194882A
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US825332A
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US945017A
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US2068314A
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US2114523A
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US2462622A
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US2621227A
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US2777118A
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US2738486A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |