US3421076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable scanning method and apparatus wherein corona discharge is detected only at approximately peak values of an applied voltage
Assignee: Okonite Co
•
Filing: 1966-10-03
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Granted: 1969-01-07
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Expires: 1986-10-03
Abstract
No abstract record available.
Inventors
- 👤 David Eigen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:05
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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |