US2526549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio-frequency current transformer
Assignee: RCA Corp
•
Filing: 1946-02-02
•
Granted: 1950-10-17
•
Expires: 1966-02-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert Russell Freas
- 👤 Jr Howard C Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:56
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/20; H01F38/22; H01F38/28; H01F38/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1792730A
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US1829740A
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US1802371A
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US2221217A
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US2225967A
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US2263613A
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US2297476A
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US2318271A
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US2331101A
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US2375309A
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US2374018A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |