US3381244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave directional coupler having ohmically joined output ports d.c. isolated from ohmically joined input and terminated ports
Assignee: AT&T Inc
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Filing: 1966-02-09
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Granted: 1968-04-30
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Expires: 1986-02-09
Abstract
No abstract record available.
Inventors
- 👤 James E Dalley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:22
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/187
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A MICROWAVE DIRECTIONAL COUPLER FOR PRODUCING SUBSTANTIALLY EQUAL OUTPUTS AT A PAIR OF SPACED OUTPUT PORTS UPON APPLICATION OF A MICROWAVE SIGNAL TO A SINGLE INPUT PORT, SAID OUTPUT PORTS BEING CONDUCTIVELY COUPLED TOGETHER AND INSULATED FROM SAID INPUT PORT, SAID INPUT PORT BEING CONDUCTIVELY CONNECTED TO A TERMINATED PORT AND SPACED THEREFROM, THE SPACE BETWEEN SAID OUTPUT PORTS
References Cited (Backward Citations)
US3098983A
Cited
US3237130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |