US3084276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized dynamic focus circuit
Assignee: Texas Instruments Inc
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Filing: 1960-01-18
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Granted: 1963-04-02
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Expires: 1980-01-18
Abstract
No abstract record available.
Inventors
- 👤 John A Severin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:54
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A TRANSISTORIZED DYNAMIC FOCUS CIRCUIT FOR A CATHODE RAY TUBE PROVIDED WITH A VARIABLE CURRENT DYNAMIC FOCUS COIL, A FIRST TRANSISTOR PROVIDED WITH BASE, EMITTER AND COLLECTOR ELECTRODES, INPUT MEANS CONNECTED TO SAID BASE ELECTRODE, SEPARATE OUTPUT MEANS CONNECTED TO SAID COLLECTOR ELECTRODE AND SAID EMITTER ELECTRODE, A PAIR OF TRANSISTORS PROVIDED EACH WITH BASE, EMITTER, AND COLLECTOR ELECTRODES, EACH SAID COLLECTOR ELECTRODE CONNECTED TO A SUITABLE POWER SUPPLY, EACH SAID BASE ELECTRODE CONNECTED TO ONE OF SAID OUTPUT MEANS, A PAIR OF RECTIFIER MEANS, EACH SAID EMITTER ELECTRODE OF SAID PAIR
Claim 2
Dependent Claim
93 words
IN A TRANSISTORIZED DYNAMIC FOCUS CIRCUIT FOR A CATHODE RAY TUBE PROVIDED WITH A VARIABLE CURRENT DYNAMIC FOCUS COIL, A FIRST TRANSISTOR PROVIDED WITH BASE, EMITTER AND COLLECTOR ELECTRODES, INPUT MEANS CONNECTED TO SAID BASE ELECTRODE, SEPARATE OUTPUT MEANS CONNECTED TO SAID COLLECTOR ELECTRODE AND SAID EMITTER ELECTRODE, A PAIR OF TRANSISTORS PROVIDED EACH WITH BASE, EMITTER, AND COLLECTOR ELECTRODES, EACH SAID COLLECTOR ELECTRODE CONNECTED TO A SUITABLE POWER SUPPLY, EACH SAID BASE ELECTRODE CONNECTED TO ONE OF SAID OUTPUT MEANS, A PAIR OF RECTIFIER MEANS, EACH SAID EMITTER ELECTRODE OF SAID PAIR
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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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |