US2728041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional band setting device for electric motor condition controlling apparatus
Assignee: Evershed and Vignoles Ltd
•
Filing: 1950-07-03
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Granted: 1955-12-20
•
Expires: 1970-07-03
Abstract
No abstract record available.
Inventors
- 👤 Boundy James Reilly
- 👤 Stephen A Bergen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:18
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)
US2085589A
Cited
US2336994A
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US2312711A
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US2282726A
Cited
US2410651A
Cited
US2545412A
Cited
US2463681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |