US2501583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor control device
Assignee: Honeywell Inc
•
Filing: 1946-06-13
•
Granted: 1950-03-21
•
Expires: 1966-06-13
Abstract
No abstract record available.
Inventors
- 👤 Curtiss R Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2452; Y10T137/7722; Y10T137/7758; Y10T137/7761
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2039405A
Cited
US2183725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |