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Patent US3490042A successfully refreshed from Google Patents.
US3490042A
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Direct current measuring reactance arrangement
Assignee: General Electric Co
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Filing: 1966-12-19
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Granted: 1970-01-13
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Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 James F Darrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:12
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/18; G01R19/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2494206A
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US2584800A
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US2676300A
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US2760158A
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US2892155A
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US2780782A
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US3132256A
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US3183498A
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US3135911A
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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) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |