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Patent US3047800A successfully refreshed from Google Patents.
US3047800A
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US
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Corona-testing of the insulation of electric cables
Assignee: Okonite Co
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Filing: 1957-11-25
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Granted: 1962-07-31
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Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Eigen David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:39
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/58; G01R31/59
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2103134A
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US2087783A
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US2494029A
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US2456704A
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US2701336A
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GB734557A
Cited
US2794168A
Cited
US2809348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |