US3079563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave frequency discriminator
Assignee: JAMES SCOTT AND CO ELECTRICAL ENGINEERS Ltd
•
Filing: 1959-01-16
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Granted: 1963-02-26
•
Expires: 1979-01-16
Abstract
No abstract record available.
Inventors
- 👤 Marsh Stanley Bruce
- 👤 Clare John Dickens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/02; H03D9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A MICROWAVE FREQUENCY DISCRIMINATOR INCLUDING A MICROWAVE BRIDGE AND A PHASE-SENSITIVE DETECTOR, THE MICROWAVE BRIDGE INCLUDING AN INPUT ARM, AN OUTPUT ARM, A RESONANT CAVITY AND AN ADJUSTABLE IMPEDANCE, AN ARM CONNECTED TO SAID RESONANT CAVITY AND AN ARM CONNECTED TO SAID ADJUSTABLE IMPEDANCE, A HYBRID JUNCTION, SAID ARMS BEING CONNECTED TO SAID HYBRID JUNCTION, AN OUTPUT SIGNAL CHANNEL CONNECTED BETWEEN SAID BRIDGE OUTPUT ARM AND SAID PHASE-SENSITIVE DETECTOR, AND A REFERENCE SIGNAL CHANNEL CONNECTED BETWEEN SAID BRIDGE INPUT ARM AND SAID PHASE-SENSITIVE DETECTOR IN WHICH THE REFERENCE SIGNAL CHANNEL INCLUDES AN ADJUSTABLE PHASE SHIFTER.
Claim 2
Dependent Claim
95 words
A MICROWAVE FREQUENCY DISCRIMINATOR INCLUDING A MICROWAVE BRIDGE AND A PHASE-SENSITIVE DETECTOR, THE MICROWAVE BRIDGE INCLUDING AN INPUT ARM, AN OUTPUT ARM, A RESONANT CAVITY AND AN ADJUSTABLE IMPEDANCE, AN ARM CONNECTED TO SAID RESONANT CAVITY AND AN ARM CONNECTED TO SAID ADJUSTABLE IMPEDANCE, A HYBRID JUNCTION, SAID ARMS BEING CONNECTED TO SAID HYBRID JUNCTION, AN OUTPUT SIGNAL CHANNEL CONNECTED BETWEEN SAID BRIDGE OUTPUT ARM AND SAID PHASE-SENSITIVE DETECTOR, AND A REFERENCE SIGNAL CHANNEL CONNECTED BETWEEN SAID BRIDGE INPUT ARM AND SAID PHASE-SENSITIVE DETECTOR IN WHICH THE REFERENCE SIGNAL CHANNEL INCLUDES AN ADJUSTABLE PHASE SHIFTER.
References Cited (Backward Citations)
US2691734A
Cited
US2561182A
Cited
US2883533A
Cited
US2770729A
Cited
US2905902A
Cited
US2886705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |