US982913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling electric motors.
Assignee: MONITOR Manufacturing Co OF BALTIMORE CITY
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Filing: 1910-05-31
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Granted: 1911-01-31
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Expires: 1930-05-31
Abstract
No abstract record available.
Inventors
- 👤 George H Whittingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:08
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/18; H02P1/20
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) | 1914-01-30 | 1914-08-01 | 1915-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-01-30 | 1918-08-01 | 1919-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-01-30 | 1922-08-01 | 1923-01-31 | $7700.00 | Window Closed / Lapsed |