Patent US2779006A successfully refreshed from Google Patents.
US2779006A
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US
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Spurious mode suppressing wave guides
Assignee: AT&T Inc
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Filing: 1951-10-10
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Granted: 1957-01-22
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Expires: 1971-10-10
Abstract
No abstract record available.
Inventors
- 👤 Walter J Albersheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:22
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/02; H01P1/16; H01P1/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2088749A
Cited
FR869734A
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US2395560A
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US2465719A
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US2512468A
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US2464598A
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US2511896A
Cited
US2556187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |