Patent US547069A successfully refreshed from Google Patents.
US547069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary field-motor
Assignee: —
•
Filing: —
•
Granted: 1895-10-01
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Expires: 1912-10-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:00
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/34; H02K17/36
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) | 1898-09-30 | 1899-04-01 | 1899-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-10-01 | 1903-04-02 | 1903-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-10-01 | 1907-04-02 | 1907-10-02 | $7700.00 | Window Closed / Lapsed |