US3189844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Search sweep oscillator comprising one or more three electrode transistors and a double base diode
Assignee: Individual
•
Filing: 1962-06-07
•
Granted: 1965-06-15
•
Expires: 1982-06-07
Abstract
No abstract record available.
Inventors
- 👤 Merlin H Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:38
CPC Classifications
H; H03; H03B; H03B23/00; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/56; H03K4/83; H03K4/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
AN AUTOMATIC FREQUENCY CONTROL CIRCUIT COMPRISING: A TRANSISTOR HAVING A COLLECTOR, AN EMITTER AND A BASE; A COMMON POINT; MEANS TO CONNECT SAID EMITTER TO SAID COMMON POINT; A FIRST RESISTOR HAVING TWO TERMINALS; MEANS TO CONNECT ONE TERMINAL OF SAID FIRST RESISTOR TO SAID BASE; A SECOND RESISTOR CONNECTED BETWEEN SAID COMMON POINT AND THE SECOND OF SAID TWO TERMINALS OF SAID FIRST RESISTOR; A FIRST DIODE CONNECTED ACROSS SAID SECOND RESISTOR; A FIRST CAPACITOR CONNECTOR IN SERIES WITH SAID FIRST RESISTOR; MEANS TO APPLY AN INPUT SIGNAL TO SAID FIRST CAPACITOR; A SECOND DIODE CONNECTED BETWEEN SAID BASE AND SAID COMMON POINT; A SECOND CAPACITOR CONNECTED BETWEEN SAID BASE AND SAID COLLECTOR; A SOURCE OF SUPPLY VOLTAGE; MEANS TO COUPLE SAID SOURCE OF VOLTAGE TO SAID COLLECTOR; A DOUBLE BASE DIODE HAVING A FIRST BASE, A SECOND BASE AND AN EMITTER; MEANS TO CONNECTED SAID FIRST BASE TO SAID COMMON POINT; MEANS TO CONNECT SAID EMITTER OF SAID DOUBLE BASE DIODE TO SAID COLLECTOR; MEANS TO COUPLE SAID SUPPLY VOLTAGE TO SAID SECOND BASE; OUTPUT CIRCUIT MEANS; AND MEANS TO COUPLE SAID COLLECTOR TO SAID OUTPUT CIRCUIT MEANS..
Claim 2
Dependent Claim
190 words
AN AUTOMATIC FREQUENCY CONTROL CIRCUIT COMPRISING: A TRANSISTOR HAVING A COLLECTOR, AN EMITTER AND A BASE; A COMMON POINT; MEANS TO CONNECT SAID EMITTER TO SAID COMMON POINT; A FIRST RESISTOR HAVING TWO TERMINALS; MEANS TO CONNECT ONE TERMINAL OF SAID FIRST RESISTOR TO SAID BASE; A SECOND RESISTOR CONNECTED BETWEEN SAID COMMON POINT AND THE SECOND OF SAID TWO TERMINALS OF SAID FIRST RESISTOR; A FIRST DIODE CONNECTED ACROSS SAID SECOND RESISTOR; A FIRST CAPACITOR CONNECTOR IN SERIES WITH SAID FIRST RESISTOR; MEANS TO APPLY AN INPUT SIGNAL TO SAID FIRST CAPACITOR; A SECOND DIODE CONNECTED BETWEEN SAID BASE AND SAID COMMON POINT; A SECOND CAPACITOR CONNECTED BETWEEN SAID BASE AND SAID COLLECTOR; A SOURCE OF SUPPLY VOLTAGE; MEANS TO COUPLE SAID SOURCE OF VOLTAGE TO SAID COLLECTOR; A DOUBLE BASE DIODE HAVING A FIRST BASE, A SECOND BASE AND AN EMITTER; MEANS TO CONNECTED SAID FIRST BASE TO SAID COMMON POINT; MEANS TO CONNECT SAID EMITTER OF SAID DOUBLE BASE DIODE TO SAID COLLECTOR; MEANS TO COUPLE SAID SUPPLY VOLTAGE TO SAID SECOND BASE; OUTPUT CIRCUIT MEANS; AND MEANS TO COUPLE SAID COLLECTOR TO SAID OUTPUT CIRCUIT MEANS..
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |