US2499326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machine
Assignee: —
•
Filing: —
•
Granted: 1950-02-28
•
Expires: 1967-02-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:14
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/52; H02K3/521; H02K3/522
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US630419A
Cited
US877311A
Cited
US1113565A
Cited
US1206381A
Cited
DE546000C
Cited
US1922216A
Cited
US2239790A
Cited
US2277906A
Cited
US2408773A
Cited
US2356186A
Cited
US2458436A
Cited
US2382315A
Cited
US2419612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |