US3261981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parametric amplifier frequency up-converter
Assignee: RCA Corp
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Filing: 1962-05-11
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Granted: 1966-07-19
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Expires: 1982-05-11
Abstract
No abstract record available.
Inventors
- 👤 Leopold A Harwood
- 👤 Murakami Tomomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:32
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A HIGH FREQUENCY STRUCTURE COMPRISING IN COMBINATION: A T-SHAPED CHASSIS COMPARTMENT MADE OF A CONDUCTIVE MATERIAL AND COMPRISED OF A CROSS-ARM SECTION AND A LEG SECTION; A FIRST CONDUCTIVE PARTITION MOUNTED WITHIN SAID CROSSARM SECTION TO SEPARATE SAID CROSS-ARM SECTION INTO A FIRST CAVITY RESONATOR AND A SECOND CAVITY RESONATOR; A SECOND CONDUCTIVE PARTITION MOUNTED AT THE JUNCTION OF SAID CROSS-ARM AND LEG SECTIONS TO TRANSFORM SAID LEG SECTION INTO A THIRD CAVITY RESONATOR;
Claim 2
Dependent Claim
74 words
A HIGH FREQUENCY STRUCTURE COMPRISING IN COMBINATION: A T-SHAPED CHASSIS COMPARTMENT MADE OF A CONDUCTIVE MATERIAL AND COMPRISED OF A CROSS-ARM SECTION AND A LEG SECTION; A FIRST CONDUCTIVE PARTITION MOUNTED WITHIN SAID CROSSARM SECTION TO SEPARATE SAID CROSS-ARM SECTION INTO A FIRST CAVITY RESONATOR AND A SECOND CAVITY RESONATOR; A SECOND CONDUCTIVE PARTITION MOUNTED AT THE JUNCTION OF SAID CROSS-ARM AND LEG SECTIONS TO TRANSFORM SAID LEG SECTION INTO A THIRD CAVITY RESONATOR;
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |