Patent US308548A successfully refreshed from Google Patents.
US308548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor
Assignee: —
•
Filing: —
•
Granted: 1884-11-25
•
Expires: 1901-11-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:33
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; H02K7/065; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30868; Y10T409/308792
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) | 1887-11-25 | 1888-05-26 | 1888-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-11-25 | 1892-05-26 | 1892-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-11-25 | 1896-05-26 | 1896-11-25 | $7700.00 | Window Closed / Lapsed |