Patent US3305732A successfully refreshed from Google Patents.
US3305732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spurious signal void circuit
Assignee: Barnes Engineering Co
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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 08:30
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,
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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) | 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 |