US2673953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable regulated ignitron rectifier
Assignee: RCA Corp
•
Filing: 1951-06-14
•
Granted: 1954-03-30
•
Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 Hubert H Wittenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:23
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/15; H02M7/151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1870022A
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US2095827A
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US2083382A
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US2196680A
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US2315619A
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US2554837A
Cited
US2567797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |