US3235840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized multiple-channel signal switching system
Assignee: United Electrodynamics Inc
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Filing: 1961-04-28
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Granted: 1966-02-15
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Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 Theodor F Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:32
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/62; H03K17/6257
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN COMBINATION: A PLURALITY OF TRANSISTORS EACH HAVING AN EMITTER TERMINAL, A BASE TERMINAL AND A COLLECTOR TERMINAL; MEANS FOR CONNECTING ALL OF SAID COLLECTORS TO A COMMON CIRCUIT; MEANS FOR CONNECTING THE EMITTER TERMINALS OF EACH TRANSISTOR WITH A SEPARATE CIRCUIT CORRESPONDING TO SAID EACH TRANSISTOR; D.C. POWER SUPPLY MEANS HAVING A NEUTRAL TERMINAL CONNECTED DIRECTLY TO SAID COLLECTOR TERMINALS; AND MEANS FOR APPLYING A NEGATIVE VOLTAGE FROM SAID POWER SUPPLY TO THE BASE TERMINAL OF ONE OF SAID TRANSISTORS AND FOR SIMULTANEOUSLY APPLYING A POSITIVE VOLTAGE FROM SAID POWER SUPPLY TO THE BASE TERMINALS OF THE REMAINING TRANSISTORS,
Claim 2
Dependent Claim
71 words
A MULTIPLE-CHANNEL SWITCHING MEANS SYSTEM COMPRISING: TWO MATRIX ARRAYS EACH HAVING I COLUMNS AND J ROWS, THE ITH COLUMN OF ONE ARRAY CORRESPONDING WITH THE ITH COLUMN OF THE OTHER ARRAY AND THE JTH ROW OF ONE ARRAY CORRESPONDING WITH THE JTH ROW OF THE OTHER ARRAY, AN INTERSECTION OF EVERY ROW AND AND COLUMN OF ONE ARRAY CORRESPONDING WITH THE INTERSECTION OF EVERY ROW AND COLUMN OF THE OTHER ARRAY;
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |