US1857023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo electric machine
Assignee: Associated Electrical Industries Ltd
•
Filing: 1930-08-30
•
Granted: 1932-05-03
•
Expires: 1950-08-30
Abstract
No abstract record available.
Inventors
- 👤 Hoseason Donald Bright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:05
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/32; H02K15/00; H02K15/02; H02K15/021; H02K9/00; H02K9/02; H02K9/04; H02K9/06; H02K1/26; H02K1/265
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1935-05-03 | 1935-11-02 | 1936-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-03 | 1939-11-02 | 1940-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-03 | 1943-11-02 | 1944-05-03 | $7700.00 | Window Closed / Lapsed |