Patent US2804577A successfully refreshed from Google Patents.
US2804577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric protective equipment
Assignee: General Electric Co
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Filing: 1954-05-25
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Granted: 1957-08-27
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Expires: 1974-05-25
Abstract
No abstract record available.
Inventors
- 👤 Adrian W Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:55
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/22; H02H7/222
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) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |