Patent US2503089A successfully refreshed from Google Patents.
US2503089A
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Magnetic control mechanism
Assignee: Magnetrol Inc
•
Filing: 1948-01-15
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Granted: 1950-04-04
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Expires: 1968-01-15
Abstract
No abstract record available.
Inventors
- 👤 Benjamin L Binford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0297; G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/016; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1734193A
Cited
US1876044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |