US2469820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine
Assignee: Singer Co
•
Filing: 1945-06-01
•
Granted: 1949-05-10
•
Expires: 1965-06-01
Abstract
No abstract record available.
Inventors
- 👤 Harry B Fuge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:06
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/02; H02K9/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US516794A
Cited
US771468A
Cited
US1017257A
Cited
US1013753A
Cited
GB191315148A
Cited
US1373002A
Cited
US1692371A
Cited
US1852476A
Cited
US1819228A
Cited
US1808845A
Cited
US1848511A
Cited
DE624063C
Cited
GB491260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |