US2696591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lattice-type reactive quadripoles
Assignee: Compagnie Industrielle des Telephones SA
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Filing: 1951-12-20
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Granted: 1954-12-07
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Expires: 1971-12-20
Abstract
No abstract record available.
Inventors
- 👤 Leroy Robert Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:24
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/17; H03H7/1741; H03H7/1783; H03H7/0115; H03H7/1791; H03H7/42; H03H7/425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR949926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |