Patent US548829A successfully refreshed from Google Patents.
US548829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for regulating current admitted to electric motors
Assignee: —
•
Filing: —
•
Granted: 1895-10-29
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Expires: 1912-10-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:20
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/625; G05F1/63; G05F1/648; H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33507
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) | 1898-10-28 | 1899-04-29 | 1899-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-10-29 | 1903-04-30 | 1903-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-10-29 | 1907-04-30 | 1907-10-30 | $7700.00 | Window Closed / Lapsed |