Patent US3467858A successfully refreshed from Google Patents.
US3467858A
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System for measuring high voltage line parameters utilizing optical transmission path
Assignee: English Electric Co Ltd
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Filing: 1966-05-06
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Granted: 1969-09-16
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Expires: 1986-05-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas Brian Burnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:22
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/40; G; G01; G01R; G01R15/00; G01R15/14; G01R15/22; G01R31/00; G01R31/08; H02H1/00; H02H1/0007; H02H1/0061; H02H1/0069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2548796A
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US2717992A
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US2689949A
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US3048744A
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US2990516A
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US3287636A
Cited
US3281673A
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US3223889A
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US3346811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |