US2626321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase inverter circuits
Assignee: RCA Corp
•
Filing: 1948-05-29
•
Granted: 1953-01-20
•
Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
- 👤 Pan Wen Yuan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:17
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/26; H03F3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1654075A
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US2027054A
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US2052730A
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US2164402A
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US2240635A
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US2340617A
Cited
US2383351A
Cited
US2350858A
Cited
US2383846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |