US3231752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement at pulse controlled electronic switches
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1960-05-23
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Granted: 1966-01-25
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Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 Jacob Walter Emil Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:29
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/601; H03K17/62; H03K17/6221; H03K17/6257; H03K17/68; H04J; H04J3/00; H04J3/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
215 words
A SWITCHING CIRCUIT FOR CONTROLLABLY CONNECTING A SOURCE OF INFORMATION SIGNALS TO AN INFORMATION SIGNAL UTILIZATION MEANS COMPRISING: TRANSISTOR MEANS, SAID TRANSISTOR MEANS INCLUDING AN INPUT TERMINAL, AN OUTPUT TERMINAL, AND A CONTROL TERMINAL MEANS, SAID INPUT TERMINAL BEING ADAPTED TO RECEIVE INFORMATION SIGNALS FROM SAID SOURCE OF INFORMATION SIGNALS; A TRANSFORMER, SAID TRANSFORMER INCLUDING A SECONDARY WINDING CONNECTED TO THE CONTROL TERMINAL MEANS OF SAID TRANSISTOR MEANS, AND A PRIMARY WINDING INCLUDING A FIRST AND SECOND WINDING TERMINALS; A CAPACITOR INCLUDING A FIRST TERMINAL CONNECTED TO SAID FIRST WINDING TERMINAL, AND A SECOND TERMINAL; AND A CONTROL PULSE SOURCE CONNECTED TO THE SECOND TERMINAL OF SAID CAPACITOR AND SAID SECOND WINDING TERMINAL; SAID OUTPUT TERMINAL OF SAID TRANSISTOR MEANS TRANSMITTING INFORMATION SIGNALS PRESENT AT THE INPUT TERMINAL OF SAID TRANSISTOR MEANS TO SAID INFORMATION SIGNAL UTILIZATION MEANS ONLY AS LONG AS SAID CONTROL PULSE SOURCE TRANSMITS A CONTROL PULSE TO SAID CAPACITOR AND SAID PRIMARY WINDING, THE INDUCTANCE OF THE PRIMARY WINDING OF THE TRANSFORMER, THE CAPACITANCE OF THE CAPACITOR CONNECTED TO SAID WINDING AND THE RESISTANCE OF THE CIRCUIT BEING SUCH THAT ON APPLICATION OF A CONTROL PULSE TO THE CIRCUIT THE RESISTIVE COMPONENT OF THE CURRENT THROUGH THE CIRCUIT PASSES THROUGH ZERO SUBSTANTIALLY SIMULTANEOUSLY WITH THE TRAILING EDGE OF THE CONTROL PULSE.
References Cited (Backward Citations)
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |