US2697138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable line-coupling capacitor
Assignee: Westinghouse Electric Corp
•
Filing: 1949-04-15
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Granted: 1954-12-14
•
Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Balthis David Leonard
- 👤 Karl F Eger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54; H03F3/20; H03F3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2159782A
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US2453716A
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US2257794A
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US2342897A
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CH248351A
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US2510613A
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US2489433A
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US2554500A
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US2554502A
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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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |