US3246258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature and impedance compensated voltage controlled variable frequency multivibrator
Assignee: RTX Corp
•
Filing: 1962-09-10
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Granted: 1966-04-12
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Henry I Boreen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:41
CPC Classifications
H; H03; H03K; H03K7/00; H03K7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A VOLTAGE CONTROLLED VARIABLE FREQUENCY MULTIVIBRATOR OSCILLATOR COMPRISED OF A PAIR OF TRANSISTORS INTERCONNECTED IN MUTUAL FEEDBACK RELATIONSHIP, EACH TRANSISTOR HAVING BASE, COLLECTOR AND EMITTER ELECTRODES, A FIRST RESISTANCE MEANS FOR DIRECTLY COUPLING A VARIABLE VOLTAGE INPUT SIGNAL SOURCE TO DIRECTLY ENERGIZE BOTH BASE ELECTRODES, A SECOND RESISTANCE MEANS FOR DIRECTLY COUPLING A BIAS VOLTAGE TO ENERGIZE BOTH BASE ELECTRODES, AND MEANS FOR COMPENSATING AGAINST VARIATION IN THE FREQUENCY OF THE MULTIVIBRATOR DESPITE A CHANGE IN THE IMPEDANCE OF THE INPUT VOLTAGE SOURCE OVER RANGE EXTENDING FROM SUBSTANTIALLY ZERO IMPEDANCE TO INFINE IMPEDANCE.
Claim 2
Dependent Claim
94 words
IN A VOLTAGE CONTROLLED VARIABLE FREQUENCY MULTIVIBRATOR OSCILLATOR COMPRISED OF A PAIR OF TRANSISTORS INTERCONNECTED IN MUTUAL FEEDBACK RELATIONSHIP, EACH TRANSISTOR HAVING BASE, COLLECTOR AND EMITTER ELECTRODES, A FIRST RESISTANCE MEANS FOR DIRECTLY COUPLING A VARIABLE VOLTAGE INPUT SIGNAL SOURCE TO DIRECTLY ENERGIZE BOTH BASE ELECTRODES, A SECOND RESISTANCE MEANS FOR DIRECTLY COUPLING A BIAS VOLTAGE TO ENERGIZE BOTH BASE ELECTRODES, AND MEANS FOR COMPENSATING AGAINST VARIATION IN THE FREQUENCY OF THE MULTIVIBRATOR DESPITE A CHANGE IN THE IMPEDANCE OF THE INPUT VOLTAGE SOURCE OVER RANGE EXTENDING FROM SUBSTANTIALLY ZERO IMPEDANCE TO INFINE IMPEDANCE.
References Cited (Backward Citations)
US2356071A
Cited
US2548737A
Cited
US3142025A
Cited
US2990478A
Cited
GB884363A
Cited
US2984729A
Cited
US3010073A
Cited
US3100285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |