Patent US1912252A successfully refreshed from Google Patents.
Patent US2474648A successfully refreshed from Google Patents.
US2474648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine
Assignee: English Electric Co Ltd
•
Filing: 1945-02-24
•
Granted: 1949-06-28
•
Expires: 1965-02-24
Abstract
No abstract record available.
Inventors
- 👤 Binney Eric Alton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:29
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/26; H02K23/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1255400A
Cited
US1468157A
Cited
US2000699A
Cited
US2018107A
Cited
US2094492A
Cited
US2060244A
Cited
US2183397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |