Patent US2590255A successfully refreshed from Google Patents.
US2590255A
Expired / Lapsed
US
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Means for retaining windings on rotors
Assignee: Keppel LeTourneau USA Inc
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Filing: 1950-05-16
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Granted: 1952-03-25
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Expires: 1970-05-16
Abstract
No abstract record available.
Inventors
- 👤 Tourneau Robert G Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:00
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/48; H02K3/487
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US383659A
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US561590A
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US610067A
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US798222A
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US1042408A
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AT58041B
Cited
CH89866A
Cited
GB179017A
Cited
FR666851A
Cited
US1998087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |