US2783431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decoupled converter system
Assignee: Individual
•
Filing: 1953-01-29
•
Granted: 1957-02-26
•
Expires: 1973-01-29
Abstract
No abstract record available.
Inventors
- 👤 Harold J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:32
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1960599A
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US2060025A
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US2222214A
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US2435515A
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US2440145A
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US2468578A
Cited
US2449214A
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US2633560A
Cited
US2710374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |