US3099752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matrix switch utilizing magnetic structures as crosspoints
Assignee: AT&T Inc
•
Filing: 1958-11-04
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Granted: 1963-07-30
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Expires: 1978-11-04
Abstract
No abstract record available.
Inventors
- 👤 Edward E Schwenzfeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:27
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/82; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A MARTIX SWITCH HAVING A PLURALITY OF CROSSPOINTS ARRANGED INTO COLUMNS AND ROWS, EACH OF SAID CROSSPOINTS COMPRISING A MAGNETIC ELEMENT HAVING A FIRST AND A SECOND SIGNAL WINDING WHICH ARE NORMALLY NOT FLUX CONNECTED, A CLAMPING WINDING ON EACH CROSSPOINT EFFECTIVE WHEN CURRENT FLOWS THERETHROUGH TO LINK THE TWO SIGNAL WINDINGS OF ITS CROSSPOINT FLUXWISE, MEANS FOR CONNECTING THE FIRST SIGNAL WINDINGS OF ALL CROSSPOINTS COMMON TO A ROW IN SERIES BETWEEN GROUND AND A SIGNAL LEAD INDIVIDUAL
Claim 2
Dependent Claim
79 words
A MARTIX SWITCH HAVING A PLURALITY OF CROSSPOINTS ARRANGED INTO COLUMNS AND ROWS, EACH OF SAID CROSSPOINTS COMPRISING A MAGNETIC ELEMENT HAVING A FIRST AND A SECOND SIGNAL WINDING WHICH ARE NORMALLY NOT FLUX CONNECTED, A CLAMPING WINDING ON EACH CROSSPOINT EFFECTIVE WHEN CURRENT FLOWS THERETHROUGH TO LINK THE TWO SIGNAL WINDINGS OF ITS CROSSPOINT FLUXWISE, MEANS FOR CONNECTING THE FIRST SIGNAL WINDINGS OF ALL CROSSPOINTS COMMON TO A ROW IN SERIES BETWEEN GROUND AND A SIGNAL LEAD INDIVIDUAL
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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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |