Patent US2678401A successfully refreshed from Google Patents.
US2678401A
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Low distortion alternating current photoelectric apparatus
Assignee: Curtiss Wright Corp
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Filing: 1950-09-28
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Granted: 1954-05-11
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Expires: 1970-09-28
Abstract
No abstract record available.
Inventors
- 👤 Charles A Jaeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:43
CPC Classifications
H; H10; H10F; H10F10/00; H10F10/10; H10F10/16; H10F99/00; H10F30/00; H10F30/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1316699A
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US1213616A
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US1899026A
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US2065365A
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US2354544A
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US2482980A
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US2459293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |