US2697208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflectionless wave guide termination
Assignee: AT&T Inc
•
Filing: 1948-10-29
•
Granted: 1954-12-14
•
Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Edward W Houghton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:01
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/24; H01P1/26; H01P1/264
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2419613A
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US2449182A
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US2451732A
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US2454530A
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US2546840A
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US2567210A
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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 |