Patent US2451324A successfully refreshed from Google Patents.
US2451324A
Expired / Lapsed
US
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Shield for transformers
Assignee: Individual
•
Filing: 1945-10-16
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Granted: 1948-10-12
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Expires: 1965-10-16
Abstract
No abstract record available.
Inventors
- 👤 Charles H Dunton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:01
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/34; H01F27/36; H01F27/363
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1326005A
Cited
US792248A
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US1531204A
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US1899981A
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US2241914A
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US2161192A
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US2280625A
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US2388473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-12 | 1952-04-12 | 1952-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-12 | 1956-04-12 | 1956-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-12 | 1960-04-12 | 1960-10-12 | $7700.00 | Window Closed / Lapsed |