Patent US2990483A successfully refreshed from Google Patents.
US2990483A
Expired / Lapsed
US
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High natural frequency air shield for a dynamoelectric machine
Assignee: General Electric Co
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Filing: 1960-02-11
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Granted: 1961-06-27
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Expires: 1980-02-11
Abstract
No abstract record available.
Inventors
- 👤 Lloyd P Shildneck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:44
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |