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Patent US2708730A successfully refreshed from Google Patents.
US2708730A
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US
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Electric motor follow-up system with movable core transformer
Assignee: Elsag Bailey Inc
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Filing: 1951-02-16
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Granted: 1955-05-17
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Expires: 1971-02-16
Abstract
No abstract record available.
Inventors
- 👤 Frank M Alexander
- 👤 Anthony J Hornfeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:47
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1953519A
Cited
US2414102A
Cited
US2420539A
Cited
US2439891A
Cited
US2507763A
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US2440984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |