US851823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of motor control.
Assignee: General Electric Co
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Filing: 1906-07-21
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Granted: 1907-04-30
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Expires: 1926-07-21
Abstract
No abstract record available.
Inventors
- 👤 Wilbur L Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:58
CPC Classifications
E; E05; E05B; E05B77/00; E05B77/46; E05B77/48; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55
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) | 1910-04-29 | 1910-10-29 | 1911-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-04-29 | 1914-10-29 | 1915-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-04-29 | 1918-10-29 | 1919-04-30 | $7700.00 | Window Closed / Lapsed |