US2459906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic reversing control for electric motors
Assignee: Robertshaw Controls Co
•
Filing: 1947-06-07
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Granted: 1949-01-25
•
Expires: 1967-06-07
Abstract
No abstract record available.
Inventors
- 👤 Weber Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:14
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27537
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2077086A
Cited
US2354364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-25 | 1952-07-26 | 1953-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-25 | 1956-07-26 | 1957-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-25 | 1960-07-26 | 1961-01-25 | $7700.00 | Window Closed / Lapsed |