US3305732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spurious signal void circuit
Assignee: Barnes Engineering Co
•
Filing: 1963-06-10
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Granted: 1967-02-21
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Expires: 1983-06-10
Abstract
No abstract record available.
Inventors
- 👤 David H Grossman
- 👤 Monty M Merlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:12
CPC Classifications
H; H04; H04Q; H04Q9/00; H04Q9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A SPURIOUS SIGNAL VOID CIRCUIT WHICH REMAINS INACTIVATED WHEN A DESIRED FREQUENCY SIGNAL OF A GIVEN DURATION IS RECEIVED AND IS ACTIVATED WHEN NO SIGNALS ARE RECEIVED OR WHEN OTHER THAN THE DESIRED SIGNALS ARE RECEIVED, COMPRISING (A) A FREQUENCY DISCRIMINATOR FOR PRODUCING A VOLTAGE IN ACCORDANCE WITH AN APPLIED RECEIVED SIGNAL, (B) A TRANSISTOR HAVING BASE, COLLECTOR, AND EMITTER ELECTRODES, (C) MEANS FOR APPLYING THE VOLTAGE FROM SAID FREQUENCY DISCRIMINATOR MEANS TO SAID BASE ELECTRODE, (D) A LOW INPEDANCE PATH CONNECTED BETWEEN A SOURCE OF POTENTIAL AND SAID EMITTER ELECTRODE, (E) A HIGH IMPEDANCE PATH CONNECTED BETWEEN SAID SOURCE OF POTENTIAL AND SAID EMITTER ELECTRODE,
Claim 2
Dependent Claim
106 words
A SPURIOUS SIGNAL VOID CIRCUIT WHICH REMAINS INACTIVATED WHEN A DESIRED FREQUENCY SIGNAL OF A GIVEN DURATION IS RECEIVED AND IS ACTIVATED WHEN NO SIGNALS ARE RECEIVED OR WHEN OTHER THAN THE DESIRED SIGNALS ARE RECEIVED, COMPRISING (A) A FREQUENCY DISCRIMINATOR FOR PRODUCING A VOLTAGE IN ACCORDANCE WITH AN APPLIED RECEIVED SIGNAL, (B) A TRANSISTOR HAVING BASE, COLLECTOR, AND EMITTER ELECTRODES, (C) MEANS FOR APPLYING THE VOLTAGE FROM SAID FREQUENCY DISCRIMINATOR MEANS TO SAID BASE ELECTRODE, (D) A LOW INPEDANCE PATH CONNECTED BETWEEN A SOURCE OF POTENTIAL AND SAID EMITTER ELECTRODE, (E) A HIGH IMPEDANCE PATH CONNECTED BETWEEN SAID SOURCE OF POTENTIAL AND SAID EMITTER ELECTRODE,
References Cited (Backward Citations)
US3205448A
Cited
US3196283A
Cited
US3207959A
Cited
US3131258A
Cited
US3221249A
Cited
US3187202A
Cited
US3243604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |