US3360609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fm multiplex system for transmitting radio signals from a stereophonic phonograph
Assignee: General Electric Co
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Filing: 1966-12-22
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Granted: 1967-12-26
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Expires: 1986-12-22
Abstract
No abstract record available.
Inventors
- 👤 Gunther E Fenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:39
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/86; H04H20/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN AN FM MULTIPLEX SYSTEM FOR TRANSMITTING STEREOPHONIC AUDIO SIGNALS, THE COMBINATION COMPRISING: FIRST AND SECOND ELECTROMECHANICAL TRANSDUCING ELEMENTS POSITIONED TO BE ACTED UPON BY FORCES IN RESPONSE TO AUDIO SIGNALS; SAID FIRST ELECTROMECHANICL TRANSDUCING ELEMENT AMPLITUDE MODULATING A FIRST CONSTANT FREQUENCY SIGNAL IN RESPONCE TO SAID AUDIO SIGNALS, SAID SECOND ELECTROMECHANICAL TRANSDUCING ELEMENT AMPLITUDE MODULATING A DC SIGNAL IN RESPONSE TO SAID AUDIO SIGNALS; MEANS COMBINING THE AMPLITUDE MODULATED OUTPUT SIGNAL OF SAID FIRST ELECTROMECHANICAL TRANSDUCING ELEMENT WITH THE AMPLITUDE MODULATED OUTPUT SIGNAL OF SAID SECOND ELECTROMECHANICAL TRANSDUCING ELEMENT AND A SECOND CONSTANT FREQUENCY SIGNAL: AND TRANSMITTER MEANS RESPONSIVE TO SAID COMBINING MEANS AND GENERATING AN FM MULTIPLEX SIGNAL IN ACCORDANCE THEREWITH.
Claim 2
Dependent Claim
113 words
IN AN FM MULTIPLEX SYSTEM FOR TRANSMITTING STEREOPHONIC AUDIO SIGNALS, THE COMBINATION COMPRISING: FIRST AND SECOND ELECTROMECHANICAL TRANSDUCING ELEMENTS POSITIONED TO BE ACTED UPON BY FORCES IN RESPONSE TO AUDIO SIGNALS; SAID FIRST ELECTROMECHANICL TRANSDUCING ELEMENT AMPLITUDE MODULATING A FIRST CONSTANT FREQUENCY SIGNAL IN RESPONCE TO SAID AUDIO SIGNALS, SAID SECOND ELECTROMECHANICAL TRANSDUCING ELEMENT AMPLITUDE MODULATING A DC SIGNAL IN RESPONSE TO SAID AUDIO SIGNALS; MEANS COMBINING THE AMPLITUDE MODULATED OUTPUT SIGNAL OF SAID FIRST ELECTROMECHANICAL TRANSDUCING ELEMENT WITH THE AMPLITUDE MODULATED OUTPUT SIGNAL OF SAID SECOND ELECTROMECHANICAL TRANSDUCING ELEMENT AND A SECOND CONSTANT FREQUENCY SIGNAL: AND TRANSMITTER MEANS RESPONSIVE TO SAID COMBINING MEANS AND GENERATING AN FM MULTIPLEX SIGNAL IN ACCORDANCE THEREWITH.
References Cited (Backward Citations)
US3122610A
Cited
US3144522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |