US429314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously-operated electric motor
Assignee: —
•
Filing: —
•
Granted: 1890-06-03
•
Expires: 1907-06-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
A; A63; A63H; A63H19/00; A63H19/02; A63H19/10
Claims Analysis
Total Claims: 0
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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) | 1893-06-02 | 1893-12-02 | 1894-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-06-02 | 1897-12-02 | 1898-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-06-03 | 1901-12-03 | 1902-06-04 | $7700.00 | Window Closed / Lapsed |