US2639401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrooptical translating system
Assignee: National Union Radio Corp
•
Filing: 1946-09-07
•
Granted: 1953-05-19
•
Expires: 1966-09-07
Abstract
No abstract record available.
Inventors
- 👤 Albert M Skellett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:38
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1161734A
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US1747791A
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US1898080A
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US1934437A
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US2161859A
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US2226658A
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US2315621A
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US2315288A
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US2459778A
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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) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |