Patent US2768355A successfully refreshed from Google Patents.
US2768355A
Expired / Lapsed
US
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Transmission line with impedancematching terminations
Assignee: AT&T Inc
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Filing: 1952-05-31
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Granted: 1956-10-23
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Expires: 1972-05-31
Abstract
No abstract record available.
Inventors
- 👤 Charles N Nebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:15
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1713603A
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DE454463C
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FR626763A
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US1815256A
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US1815254A
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US2252613A
Cited
US2158978A
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US2163750A
Cited
US2223736A
Cited
US2628312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |