Patent US2395841A successfully refreshed from Google Patents.
Patent US2623945A successfully refreshed from Google Patents.
US2623945A
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Adjustable electrical phaseshifting network
Assignee: International Standard Electric Corp
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Filing: 1946-05-09
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Granted: 1952-12-30
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Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Wigan Edmund Ramsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:33
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/18; H03H7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2093665A
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US2072946A
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FR839492A
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US2173427A
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US2298177A
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US2236985A
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US2294863A
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US2300632A
Cited
US2418842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |