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US2963668A
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Broad-band electromagnetic wave transmission means
Assignee: AT&T Inc
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Filing: 1955-12-28
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Granted: 1960-12-06
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Expires: 1975-12-28
Abstract
No abstract record available.
Inventors
- 👤 Edward A Ohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:58
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/165; H01P1/175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2511610A
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US2645758A
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US2719274A
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US2790149A
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FR1089421A
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US2849684A
Cited
US2802183A
Cited
US2820720A
Cited
US2846655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |