Patent US3391345A successfully refreshed from Google Patents.
US3391345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency discriminator with tuned antiresonant circuits
Assignee: Alcatel Lucent SAS
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Filing: 1965-07-26
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Granted: 1968-07-02
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Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Burgert Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:48
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A FREQUENCY DISCRIMINATOR FOR ELECTRIC WAVES OF A DEFINED NOMINAL FREQUENCY CARRIER MODULATED IN FREQUENCY, COMPRISING A FIRST ANTIRESONANT CIRCUIT TUNED TO THE CARRIER FREQUENCY, A SECOND ANTIRESEONANT CIRCUIT TUNED TO THE CARRIER FREQUENCY, FREQUENCY, AN OUTPUT CIRCUIT COMPOSED OF TWO DIODES CONNECTED TO RESPECTIVE ENDS OF TWO EQUAL RESISTORS IN SERIES, AND TWO EQUAL CAPACITORS CONNECTED IN PARALLEL TO RESPECTIVE ONES OF SAID RESISTORS, A FIRST TIGHT COUPLING TRANSFORMER HAVING A PRIMARY WINDING FORMING PART OF SAID FIRST ANTIRESONANT CIRCUIT, A SECOND TIGHT COUPLING TRANSFORMER HAVING A PRIMARY WINDING FORMING PART OF SAID SECOND ANTIRESONANT CIRCUIT, THE
Claim 2
Dependent Claim
98 words
A FREQUENCY DISCRIMINATOR FOR ELECTRIC WAVES OF A DEFINED NOMINAL FREQUENCY CARRIER MODULATED IN FREQUENCY, COMPRISING A FIRST ANTIRESONANT CIRCUIT TUNED TO THE CARRIER FREQUENCY, A SECOND ANTIRESEONANT CIRCUIT TUNED TO THE CARRIER FREQUENCY, FREQUENCY, AN OUTPUT CIRCUIT COMPOSED OF TWO DIODES CONNECTED TO RESPECTIVE ENDS OF TWO EQUAL RESISTORS IN SERIES, AND TWO EQUAL CAPACITORS CONNECTED IN PARALLEL TO RESPECTIVE ONES OF SAID RESISTORS, A FIRST TIGHT COUPLING TRANSFORMER HAVING A PRIMARY WINDING FORMING PART OF SAID FIRST ANTIRESONANT CIRCUIT, A SECOND TIGHT COUPLING TRANSFORMER HAVING A PRIMARY WINDING FORMING PART OF SAID SECOND ANTIRESONANT CIRCUIT, THE
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |