US2697197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system using multiple winding saturable reactors
Assignee: Individual
•
Filing: 1949-08-17
•
Granted: 1954-12-14
•
Expires: 1969-08-17
Abstract
No abstract record available.
Inventors
- 👤 Walter J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:24
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/30; H02P7/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1710755A
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US1926275A
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US1954682A
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US2190353A
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US1917082A
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US2078880A
Cited
US2306998A
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US2596685A
Cited
US2504105A
Cited
US2558094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |