US3387219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demodulator circuit for angle-modulation systems
Assignee: Bell and Howell Co
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Filing: 1965-09-02
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Granted: 1968-06-04
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Bert H Dann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:48
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/04; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A DEMODULATOR FOR TIME MODULATED SIGNALS, THE CIRCUIT COMPRISING FIRST AND SECOND TRANSISTORS EACH HAVING EMITTER, COLLECTOR, AND BASE ELECTRODES, MEANS CONNECTING THE COLLECTOR ELECTRODES THROUGH A COMMON LOAD IMPEDANCE TO ONE END OF A POTENTIAL SOURCE, FIRST AND SECOND RESISTORS CONNECTED RESPECTIVELY TO THE EMITTER ELECTRODES OF THE TWO TRANSISTORS, MEANS CONNECTING THE RESISTORS THROUGH A COMMON CURRENT PATH TO THE OTHER END OF SAID POTENTIAL SOURCE, IMPEDANCE MEANS CONNECTING EACH OF THE BASE ELECTRODES TO AN INTERMEDIATE POTENTIAL POINT OF SAID PO-
Claim 2
Dependent Claim
85 words
IN A DEMODULATOR FOR TIME MODULATED SIGNALS, THE CIRCUIT COMPRISING FIRST AND SECOND TRANSISTORS EACH HAVING EMITTER, COLLECTOR, AND BASE ELECTRODES, MEANS CONNECTING THE COLLECTOR ELECTRODES THROUGH A COMMON LOAD IMPEDANCE TO ONE END OF A POTENTIAL SOURCE, FIRST AND SECOND RESISTORS CONNECTED RESPECTIVELY TO THE EMITTER ELECTRODES OF THE TWO TRANSISTORS, MEANS CONNECTING THE RESISTORS THROUGH A COMMON CURRENT PATH TO THE OTHER END OF SAID POTENTIAL SOURCE, IMPEDANCE MEANS CONNECTING EACH OF THE BASE ELECTRODES TO AN INTERMEDIATE POTENTIAL POINT OF SAID PO-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |