US2809230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated coil
Assignee: Westinghouse Electric Corp
•
Filing: 1952-09-27
•
Granted: 1957-10-08
•
Expires: 1972-09-27
Abstract
No abstract record available.
Inventors
- 👤 Graham L Moses
- 👤 Marvin M Fromm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:07
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/32; H02K3/34; Y; Y10; Y10S; Y10S264/00; Y10S264/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US334850A
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CA455706A
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US830419A
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US2006931A
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US2066242A
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US2135315A
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US2132258A
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US2332376A
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US2432194A
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US2513080A
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US2663755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |