US1640086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-control mechanism
Assignee: Individual
•
Filing: 1925-12-12
•
Granted: 1927-08-23
•
Expires: 1945-12-12
Abstract
No abstract record available.
Inventors
- 👤 Mccullough Charles Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:38
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/18
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) | 1930-08-22 | 1931-02-21 | 1931-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-08-22 | 1935-02-21 | 1935-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-08-22 | 1939-02-21 | 1939-08-23 | $7700.00 | Window Closed / Lapsed |