US3138759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse spacing detection circuit
Assignee: AT&T Inc
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Filing: 1960-11-23
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Granted: 1964-06-23
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Expires: 1980-11-23
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:23
CPC Classifications
H; H03; H03K; H03K9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
MEANS FOR DETECTING THOSE SPACINGS BETWEEN PULSES IN A PULSE-TRAIN WHICH ARE GREATER THAN A PREDETERMINED VALVE WHICH COMPRISES, IN COMBINATION, A BISTABLE REGENERATIVE DEVICE HAVING AN INPUT CONDUCTOR AND TWO OUTPUT CONDUCTORS, MEANS FOR APPLYING SAID PULSE-TRAIN TO SAID INPUT CONDUCTOR TO CAUSE THE VOLTAGE DELIVERED TO EACH OF SAID OUTPUT CONDUCTORS TO CHANGE FROM ONE LEVEL TO ANOTHER WHENEVER A PULSE IN SAID PULSE-TRAIN IS APPLIED TO SAID INPUT CONDUCTOR, TWO SEPARATE TIME-REFERENCE NETWORKS EACH CONNECTED TO ONE OF SAID OUTPUT CONDUCTORS AND EACH GENERATING AN ELECTRICAL SIGNAL WHOSE MAGNITUDE IS MONOTONICALLY RELATED TO THE LENGTH OF TIME THE VOLTAGE DELIVERED TO THE CONNECTED OUTPUT CONDUCTOR HAS EXISTED AT A SINGLE VOLTAGE LEVEL, AND MEANS FOR GENERATING AN OUTPUT SIGNAL WHENEVER A SIGNAL FROM ONE OF SAID NETWORKS IS GREATER THAN A PREDETERMINED VALUE.
Claim 2
Dependent Claim
136 words
MEANS FOR DETECTING THOSE SPACINGS BETWEEN PULSES IN A PULSE-TRAIN WHICH ARE GREATER THAN A PREDETERMINED VALVE WHICH COMPRISES, IN COMBINATION, A BISTABLE REGENERATIVE DEVICE HAVING AN INPUT CONDUCTOR AND TWO OUTPUT CONDUCTORS, MEANS FOR APPLYING SAID PULSE-TRAIN TO SAID INPUT CONDUCTOR TO CAUSE THE VOLTAGE DELIVERED TO EACH OF SAID OUTPUT CONDUCTORS TO CHANGE FROM ONE LEVEL TO ANOTHER WHENEVER A PULSE IN SAID PULSE-TRAIN IS APPLIED TO SAID INPUT CONDUCTOR, TWO SEPARATE TIME-REFERENCE NETWORKS EACH CONNECTED TO ONE OF SAID OUTPUT CONDUCTORS AND EACH GENERATING AN ELECTRICAL SIGNAL WHOSE MAGNITUDE IS MONOTONICALLY RELATED TO THE LENGTH OF TIME THE VOLTAGE DELIVERED TO THE CONNECTED OUTPUT CONDUCTOR HAS EXISTED AT A SINGLE VOLTAGE LEVEL, AND MEANS FOR GENERATING AN OUTPUT SIGNAL WHENEVER A SIGNAL FROM ONE OF SAID NETWORKS IS GREATER THAN A PREDETERMINED VALUE.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |