Patent US3243787A successfully refreshed from Google Patents.
US3243787A
Expired / Lapsed
US
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Pulse generating system
Assignee: AT&T Inc
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Filing: 1961-11-13
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Granted: 1966-03-29
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Expires: 1981-11-13
Abstract
No abstract record available.
Inventors
- 👤 Habib Nissin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:44
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K17/00; H03K17/04; H03K17/041; H03K17/04113; H03K17/51; H03K17/56; H03K17/60; H03K17/64; H03K3/01; H03K3/012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
APPARATUS FOR DRIVING A PLURALITY OF MAGNETIC MEMORY LINES WITH A CURRENT PULSE COMPRISING A PLURALITY OF MEMORY LINES EACH ONE OF WHICH HAS A COUNTERPART TWO TERMINAL DUMMY LOAD OF SUBSTANTIALLY EQUAL INPUT IMPEDANCE, SWITCHING MEANS ASSOCIATED WITH EACH MEMORY LINE HAVING AN INPUT AND TWO OUTPUTS FOR STEERING A CURRENT SUPPLIED TO ITS INPUT TO EITHER OF THE TWO OUTPUTS, MEANS FOR CONNECTING ONE SIDE OF EACH MEMORY LINE TO ONE TERMINAL OF ITS COUNTERPART LOAD, MEANS FOR CONNECTING ONE OUTPUT OF EACH SWITCHING MEANS TO THE OTHER SIDE OF ITS RESPECTIVE MEMORY LINE AND CONNECTING THE OTHER OUTPUT TO THE OTHER TERMINAL OF THE COUNTERPART LOAD, MEANS FOR CONNECTING A PLURALITY OF SWITCHING MEANS AND MEMORY LINES IN A SERIES HAVING A FIRST SWITCHING MEANS AND A LAST MEMORY LINE WITH THE INTERVENING JUNCTIONS OF EACH MEMORY LINE AND ITS COUNTERPART LOAD CONNECTED TO THE INPUT OF THE NEXT SWITCHING MEANS, A SOURCE OF DIRECT CURRENT HAVING TWO TERMINALS, A LARGE INDUCTOR CONNECTED TO ONE OF THE TERMINALS OF SAID CURRENT SOURCE, AND MEANS FOR CONNECTING THE INPUT OF THE FIRST SWITCHING MEANS AND THE JUNCTION OF THE LAST MEMORY LINE WITH ITS COUNTERPART LOAD BETWEEN THE INDUCTOR AND THE OTHER TERMINAL OF SAID CURRENT SOURCE.
Claim 2
Dependent Claim
209 words
APPARATUS FOR DRIVING A PLURALITY OF MAGNETIC MEMORY LINES WITH A CURRENT PULSE COMPRISING A PLURALITY OF MEMORY LINES EACH ONE OF WHICH HAS A COUNTERPART TWO TERMINAL DUMMY LOAD OF SUBSTANTIALLY EQUAL INPUT IMPEDANCE, SWITCHING MEANS ASSOCIATED WITH EACH MEMORY LINE HAVING AN INPUT AND TWO OUTPUTS FOR STEERING A CURRENT SUPPLIED TO ITS INPUT TO EITHER OF THE TWO OUTPUTS, MEANS FOR CONNECTING ONE SIDE OF EACH MEMORY LINE TO ONE TERMINAL OF ITS COUNTERPART LOAD, MEANS FOR CONNECTING ONE OUTPUT OF EACH SWITCHING MEANS TO THE OTHER SIDE OF ITS RESPECTIVE MEMORY LINE AND CONNECTING THE OTHER OUTPUT TO THE OTHER TERMINAL OF THE COUNTERPART LOAD, MEANS FOR CONNECTING A PLURALITY OF SWITCHING MEANS AND MEMORY LINES IN A SERIES HAVING A FIRST SWITCHING MEANS AND A LAST MEMORY LINE WITH THE INTERVENING JUNCTIONS OF EACH MEMORY LINE AND ITS COUNTERPART LOAD CONNECTED TO THE INPUT OF THE NEXT SWITCHING MEANS, A SOURCE OF DIRECT CURRENT HAVING TWO TERMINALS, A LARGE INDUCTOR CONNECTED TO ONE OF THE TERMINALS OF SAID CURRENT SOURCE, AND MEANS FOR CONNECTING THE INPUT OF THE FIRST SWITCHING MEANS AND THE JUNCTION OF THE LAST MEMORY LINE WITH ITS COUNTERPART LOAD BETWEEN THE INDUCTOR AND THE OTHER TERMINAL OF SAID CURRENT SOURCE.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |