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Patent US2550496A successfully refreshed from Google Patents.
US2550496A
Expired / Lapsed
US
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Nonoscillating protective control system
Assignee: General Electric Co
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Filing: 1950-01-14
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Granted: 1951-04-24
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Expires: 1970-01-14
Abstract
No abstract record available.
Inventors
- 👤 Paul J Reifschneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:48
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/22; H02H7/222; H02H7/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |