Patent US3440528A successfully refreshed from Google Patents.
US3440528A
Expired / Lapsed
US
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Method and apparatus for locating voids in an insulated electrical cable
Assignee: General Electric Co
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Filing: 1967-06-14
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Granted: 1969-04-22
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Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 Harry C Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:41
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/08; G01R31/11; G01R31/50; G01R31/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2602834A
Cited
US2800627A
Cited
US2887652A
Cited
US3156865A
Cited
US3244978A
Cited
US3281674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |