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Patent US3480834A successfully refreshed from Google Patents.
US3480834A
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US
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Miniature overvoltage protection circuit having separate voltage sensing and time delay circuits
Assignee: Westinghouse Electric Corp
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Filing: 1966-09-19
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Granted: 1969-11-25
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Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 William W Billings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:57
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2885569A
Cited
US3001100A
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US3119951A
Cited
US3214641A
Cited
US3309583A
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US3243658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |