Patent US3231722A successfully refreshed from Google Patents.
US3231722A
Expired / Lapsed
US
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Dynamic storage analog computer
Assignee: Computer Systems Inc
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Filing: 1961-03-31
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Granted: 1966-01-25
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
- 👤 Robert K Stern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:57
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/02; G11C27/024; G11C27/026; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/161; G06G7/18; G06G7/184; G06G7/186; G06G7/1865; G06G7/20; G06G7/22; G06G7/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
AN ANALOG COMPUTER COMPRISING AT LEAST TWO OPERATIONAL AMPLIFIER MEMORY UNITS HAVING TRACKING AND STORING MODES AND RESPONSIVE TO A CONTROL SIGNAL FOR SWITCHING BETWEEN SAID MODES, MEANS FOR COUPLING SAID MEMORY UNITS IN CASCADE, AND MEANS FOR SUPPLYING A CONTROL SIGNAL TO EACH OF SAID MEMORY UNITS FOR SWITCHING THE FIRST OF SAID MEMORY UNITS FROM A FIRST OF SAID MODES TO THE SECOND AT SPACED TIME INTERVALS, AND FROM SAID SECOND MODE TO SAID FIRST MODE AT VARIABLY SPACED ALTERNATE TIME INTERVALS, AND FOR SWITCHING THE SECOND OF SAID MEMORY UNITS AT SUCH TIMES BETWEEN THE CONVERSE MODES.
References Cited (Backward Citations)
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Cited
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US3016197A
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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 |