Patent US2830249A successfully refreshed from Google Patents.
US2830249A
Expired / Lapsed
US
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Servomechanisms
Assignee: Cutler Hammer Inc
•
Filing: 1954-03-19
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Granted: 1958-04-08
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Expires: 1974-03-19
Abstract
No abstract record available.
Inventors
- 👤 Norman L Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:45
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/34; H02P7/347
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2524051A
Cited
US2644124A
Cited
US2517353A
Cited
US2551620A
Cited
US2525967A
Cited
US2629846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |