Patent US1994835A successfully refreshed from Google Patents.
Patent US3248558A successfully refreshed from Google Patents.
US3248558A
Expired / Lapsed
US
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Distributing and encoding devices including sequentially nonconducting transistor chains employing input time constant circuits to effect digital delay
Assignee: Unisys Corp
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Filing: 1959-05-01
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Granted: 1966-04-26
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Expires: 1979-05-01
Abstract
No abstract record available.
Inventors
- 👤 Seif Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:34
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/15; H03K5/15013; H03K5/15026; H03K5/1504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A PULSE GENERATOR CIRCUIT FOR PRODUCING FROM A SINGLE INPUT PULSE A SERIES OF TIME-SPACED OUTPUT PULSES ONE AT EACH OF A PLURALITY OF DIFFERENT OUTPUT TERMINALS, SAID PULSE GENERATOR CIRCUIT COMPRISING: A SERIES OF TRANSISTOR STAGES INCLUDING A FIRST AND AT LEAST ONE FOLLOWING STAGE COUPLED IN TANDEM, EACH STAGE INCLUDING A TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES; MEANS, INCLUDING A COLLECTOR RESISTOR FOR EACH STAGE, CONNETING A SOURCE OF OPERATING POTENTIAL BETWEEN THE COLLECTOR AND EMITTER ELECTORDES OF EACH TRANSISTOR; MEANS, INCLUDING A COUPLING CAPACITOR FOR EACH STAGE EXCEPT THE LAST, COUPLING THE COLLECTOR OF EACH TRANSISTOR TO THE BASE OF THE NEXT ADJACENT TRANSISTOR; MEANS, INCLUDING A BASE RESISTOR FOR EACH STAGE, CONNECTING SAID SOURCE OF OPERATING POTENTIAL BETWEEN THE BASE AND EMITTER OF EACH TRANSISTOR, SAID COUPLING CAPACITOR AND SAID COLLECTOR RESISTOR OF EACH STAGE EXCEPT THE LAST COMPRISING A CHARGE PATH AND SAID BASE RESISTOR AND SAID COUPLING CAPACITOR OF EACH SAID STAGE FOLLOWING THE FIRST STASGE COMPRISING A DISCHARGE PATH OF COMPONENT VALUE SUCH THAT THE CHARGING PATH TIME CONSTANT IS SHORTER THAN THE DISCHARGING PATH TIME CONSTANT, SAID SOURCE OF OPERATING POTENTIAL BEING OF A POLARITY
Claim 2
Dependent Claim
194 words
A PULSE GENERATOR CIRCUIT FOR PRODUCING FROM A SINGLE INPUT PULSE A SERIES OF TIME-SPACED OUTPUT PULSES ONE AT EACH OF A PLURALITY OF DIFFERENT OUTPUT TERMINALS, SAID PULSE GENERATOR CIRCUIT COMPRISING: A SERIES OF TRANSISTOR STAGES INCLUDING A FIRST AND AT LEAST ONE FOLLOWING STAGE COUPLED IN TANDEM, EACH STAGE INCLUDING A TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES; MEANS, INCLUDING A COLLECTOR RESISTOR FOR EACH STAGE, CONNETING A SOURCE OF OPERATING POTENTIAL BETWEEN THE COLLECTOR AND EMITTER ELECTORDES OF EACH TRANSISTOR; MEANS, INCLUDING A COUPLING CAPACITOR FOR EACH STAGE EXCEPT THE LAST, COUPLING THE COLLECTOR OF EACH TRANSISTOR TO THE BASE OF THE NEXT ADJACENT TRANSISTOR; MEANS, INCLUDING A BASE RESISTOR FOR EACH STAGE, CONNECTING SAID SOURCE OF OPERATING POTENTIAL BETWEEN THE BASE AND EMITTER OF EACH TRANSISTOR, SAID COUPLING CAPACITOR AND SAID COLLECTOR RESISTOR OF EACH STAGE EXCEPT THE LAST COMPRISING A CHARGE PATH AND SAID BASE RESISTOR AND SAID COUPLING CAPACITOR OF EACH SAID STAGE FOLLOWING THE FIRST STASGE COMPRISING A DISCHARGE PATH OF COMPONENT VALUE SUCH THAT THE CHARGING PATH TIME CONSTANT IS SHORTER THAN THE DISCHARGING PATH TIME CONSTANT, SAID SOURCE OF OPERATING POTENTIAL BEING OF A POLARITY
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |