Patent US3305784A successfully refreshed from Google Patents.
US3305784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uhf television tuner
Assignee: Oak Electro Netics Corp
•
Filing: 1963-06-17
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Granted: 1967-02-21
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Edward D Chalmers
- 👤 John Y Ma
- 👤 Joseph S Naber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:45
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A UHF TUNER, COMPRISING: A HOUSING OF CONDUCTIVE MATERIAL; A SHIELD IN SAID HOUSING DIVIDING THE INTERIOR THEREOF INTO TWO COMPARTMENTS; INPUT TERMINALS FOR CONNECTION WITH AN ANTENNA CIRCUIT; A FIRST TUNABLE LINE IN ONE OF SAID COMPARTMENTS AND CONNECTED WITH SAID INPUT TERMINALS FOR TUNING THE ANTENNA CIRCUIT; A MIXER CIRCUIT HAVING A PORTION IN EACH OF SAID COMPARTMENTS AND INCLUDING A SECOND TUNABLE LINE IN SAID ONE COMPARTMENT AND IN COUPLED RELATION WITH SAID FIRST TUNABLE LINE; AN OSCILLATOR CIRCUIT INCLUDING A THIRD TUNABLE LINE IN SAID OTHER COMPARTMENT, SAID MIXER CIRCUIT PORTION IN SAID OTHER COMPARTMENT BEING IN COUPLED RELATION WITH SAID OSCILLATOR CIRCUIT; AN OUTPUT TERMINAL CONNECTED WITH SAID MIXER CIRCUIT; AND MEANS FOR TUNING SAID LINES.
Claim 2
Dependent Claim
121 words
A UHF TUNER, COMPRISING: A HOUSING OF CONDUCTIVE MATERIAL; A SHIELD IN SAID HOUSING DIVIDING THE INTERIOR THEREOF INTO TWO COMPARTMENTS; INPUT TERMINALS FOR CONNECTION WITH AN ANTENNA CIRCUIT; A FIRST TUNABLE LINE IN ONE OF SAID COMPARTMENTS AND CONNECTED WITH SAID INPUT TERMINALS FOR TUNING THE ANTENNA CIRCUIT; A MIXER CIRCUIT HAVING A PORTION IN EACH OF SAID COMPARTMENTS AND INCLUDING A SECOND TUNABLE LINE IN SAID ONE COMPARTMENT AND IN COUPLED RELATION WITH SAID FIRST TUNABLE LINE; AN OSCILLATOR CIRCUIT INCLUDING A THIRD TUNABLE LINE IN SAID OTHER COMPARTMENT, SAID MIXER CIRCUIT PORTION IN SAID OTHER COMPARTMENT BEING IN COUPLED RELATION WITH SAID OSCILLATOR CIRCUIT; AN OUTPUT TERMINAL CONNECTED WITH SAID MIXER CIRCUIT; AND MEANS FOR TUNING SAID LINES.
References Cited (Backward Citations)
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US2513393A
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US2763776A
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US2759158A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |