US2474679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor control proportioning system
Assignee: Stewart Warner Corp
•
Filing: 1944-06-19
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Granted: 1949-06-28
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Expires: 1964-06-19
Abstract
No abstract record available.
Inventors
- 👤 Charles W Klug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:19
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2010577A
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US2349963A
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US2131759A
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US2288338A
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US2175009A
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US2275317A
Cited
US2437140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |