US3231863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory bus control unit
Assignee: International Business Machines Corp
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Filing: 1960-12-30
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Granted: 1966-01-25
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Lars O Ulfsparre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:39
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/14; G06F13/16; G06F13/18; G06F15/00; G06F15/76; G06F15/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A DATA HANDLING SYSTEM, FIRST AND SECOND MEMORY DEVICES HAVING A PLURALITY OF STORAGE REGISTERS ACCESSIBLE IN A PREDETERMINED TIME INTERVAL, THE ACCESS TIME OF INFORMATION STORED IN SAID FIRST MEMORY DEVICE BEING SHORTER THAN THE ACCESS TIME OF INFORMATION STORED IN SAID SECOND MEMORY DEVICE, MEANS COUPLED TO SAID MEMORY DEVICES FOR SELECTING A GIVEN MEMORY DEVICE AND ADDRESSING A GIVEN STORAGE REGISTER THEREIN FOR READING INFORMATION THEREFORM, A PLURALITY OF LOAD DEVICES, A SINGLE OUTPUT BUT COUPLING BOTH OF SAID MEMORY DEVICES TO ALL OF
Claim 2
Dependent Claim
88 words
IN A DATA HANDLING SYSTEM, FIRST AND SECOND MEMORY DEVICES HAVING A PLURALITY OF STORAGE REGISTERS ACCESSIBLE IN A PREDETERMINED TIME INTERVAL, THE ACCESS TIME OF INFORMATION STORED IN SAID FIRST MEMORY DEVICE BEING SHORTER THAN THE ACCESS TIME OF INFORMATION STORED IN SAID SECOND MEMORY DEVICE, MEANS COUPLED TO SAID MEMORY DEVICES FOR SELECTING A GIVEN MEMORY DEVICE AND ADDRESSING A GIVEN STORAGE REGISTER THEREIN FOR READING INFORMATION THEREFORM, A PLURALITY OF LOAD DEVICES, A SINGLE OUTPUT BUT COUPLING BOTH OF SAID MEMORY DEVICES TO ALL OF
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) | 1969-01-24 | 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 |