Patent US3445726A successfully refreshed from Google Patents.
US3445726A
Expired / Lapsed
US
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Protective system for gas-filled electric apparatus
Assignee: General Electric Co
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Filing: 1966-12-15
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Granted: 1969-05-20
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Expires: 1986-12-15
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:46
CPC Classifications
H; H02; H02H; H02H5/00; H02H5/08; H01; H01F; H01F27/00; H01F27/40; H01F27/402; H01F27/404
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1670697A
Cited
US2103816A
Cited
US2176338A
Cited
US2553291A
Cited
US2871317A
Cited
US3129309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |