US2515874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer
Assignee: RCA Corp
•
Filing: 1946-09-17
•
Granted: 1950-07-18
•
Expires: 1966-09-17
Abstract
No abstract record available.
Inventors
- 👤 Cyril N Hoyler
- 👤 Rudolph A Bierwirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:03
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H05B6/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB171836A
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US1713214A
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US1898931A
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US1813857A
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GB344181A
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US1882075A
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US1940840A
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US2115826A
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US2153090A
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US2182820A
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US2314865A
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US2314875A
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US2366290A
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US2374597A
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US2414990A
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US2445169A
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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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |