US2456941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer structure
Assignee: Westinghouse Electric Corp
•
Filing: 1944-01-29
•
Granted: 1948-12-21
•
Expires: 1964-01-29
Abstract
No abstract record available.
Inventors
- 👤 John K Hodnette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:29
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52; H03C1/54; H03C1/56; H03C1/58; H01; H01F; H01F27/00; H01F27/24; H01F27/26; H01F27/263; H01F27/33; H01F30/00; H01F30/06; H01F30/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1586889A
Cited
US1301735A
Cited
US1565531A
Cited
GB374828A
Cited
US2180759A
Cited
US2289175A
Cited
US2318095A
Cited
US2360511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |