Patent US1539398A successfully refreshed from Google Patents.
Patent US3340510A successfully refreshed from Google Patents.
US3340510A
Expired / Lapsed
US
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Pulse code responsive signal detector and gate circuit
Assignee: AT&T Inc
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Filing: 1963-07-18
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Granted: 1967-09-05
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Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 John M Tiffany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:20
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/78; G01S13/781; G01S13/784
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A SYSTEM FOR DISCRIMINATNG PREDETERMINED CODED SIGNALS MADE UP OF SPACED PULSES FROM NOISE SIGNALS AND INDICATING THE RECEIPT OF THE CODED SIGNALS, COMPRISING: MEANS FOR GENERATING AN INDICATING PULSE, MEANS COUPLED TO THE GENERATING MEANS FOR INDICATING THE RECEIPT OF THE INDICATING PULSE, A PLURALITY OF BIASING DIODES, A GATE DIODE, COUPLED BETWEEN THE GENERATING MEANS AND THE INDICATING MEANS AND CONNECTED TO AND NORMALLY BIASED IN THE NON-CONDUCTING DIRECTION BY THE BIASING DIODES, FOR PRECLUDING THE PASSAGE OF THE INDICATING PULSE TO THE INDICATING MEANS, A SOURCE OF CODED SIGNALS AND NOISE SIGNALS,
Claim 2
Independent Claim
95 words
A SYSTEM FOR DISCRIMINATNG PREDETERMINED CODED SIGNALS MADE UP OF SPACED PULSES FROM NOISE SIGNALS AND INDICATING THE RECEIPT OF THE CODED SIGNALS, COMPRISING: MEANS FOR GENERATING AN INDICATING PULSE, MEANS COUPLED TO THE GENERATING MEANS FOR INDICATING THE RECEIPT OF THE INDICATING PULSE, A PLURALITY OF BIASING DIODES, A GATE DIODE, COUPLED BETWEEN THE GENERATING MEANS AND THE INDICATING MEANS AND CONNECTED TO AND NORMALLY BIASED IN THE NON-CONDUCTING DIRECTION BY THE BIASING DIODES, FOR PRECLUDING THE PASSAGE OF THE INDICATING PULSE TO THE INDICATING MEANS, A SOURCE OF CODED SIGNALS AND NOISE SIGNALS,
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |