US3015774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corona-testing of electric insulation
Assignee: Okonite Co
•
Filing: 1957-12-17
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Granted: 1962-01-02
•
Expires: 1977-12-17
Abstract
No abstract record available.
Inventors
- 👤 Eigen David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:51
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)
US1524645A
Cited
FR621731A
Cited
US1943392A
Cited
US2150223A
Cited
US2170813A
Cited
US2194303A
Cited
US2794169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |