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US2730669A
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US
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Electronic inverter system
Assignee: RCA Corp
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Filing: 1951-09-26
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Granted: 1956-01-10
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Expires: 1971-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jr William M Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:54
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1390727A
Cited
US1757704A
Cited
US1980459A
Cited
US2473542A
Cited
US2619622A
Cited
US2611090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |