US1376453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling and regulating apparatus for alternating-current dynamo-electric machines
Assignee: Cutler Hammer Manufacturing Co
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Filing: 1918-01-21
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Granted: 1921-05-03
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Expires: 1938-01-21
Abstract
No abstract record available.
Inventors
- 👤 Meyer Friedrich Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:12
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/16; H02P25/32; H02P25/325
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) | 1924-05-02 | 1924-11-01 | 1925-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-05-02 | 1928-11-01 | 1929-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-05-02 | 1932-11-01 | 1933-05-03 | $7700.00 | Window Closed / Lapsed |