US3484679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus for changing the effective capacitance of a cable
Assignee: Boeing North American Inc
•
Filing: 1966-10-03
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Granted: 1969-12-16
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Expires: 1986-10-03
Abstract
No abstract record available.
Inventors
- 👤 Richard W Hodgson
- 👤 Clifford F Kennedy
- 👤 Charles T Poarch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/26; H01B17/28; H01B9/00; H01B9/04; H02; H02J; H02J3/00; H02J3/18; H02J3/1821; H02J3/1835; Y; Y02; Y02E; Y02E40/00; Y02E40/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR742448A
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US1039298A
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GB190721860A
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GB190827859A
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US1259384A
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US1266516A
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CH106023A
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CH126484A
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GB439457A
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US2231701A
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US3067394A
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US3193712A
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US3281647A
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US3377530A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |