US2720618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balancing circuits for electric motor control system
Assignee: Honeywell Inc
•
Filing: 1951-11-28
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Granted: 1955-10-11
•
Expires: 1971-11-28
Abstract
No abstract record available.
Inventors
- 👤 Henry L Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:39
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB584127A
Cited
US2371415A
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US2556788A
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US2489999A
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US2520462A
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US2576056A
Cited
US2539127A
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US2601271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |