Patent US3304418A successfully refreshed from Google Patents.
US3304418A
Expired / Lapsed
US
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Binary-coded decimal adder with radix correction
Assignee: Olivetti SpA
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Filing: 1965-03-01
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Granted: 1967-02-14
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Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Perotto Pier Giorgio
- 👤 Sandre Giovanni De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:24
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/492; G06F7/493; G06F7/494; G06F7/495; G06F15/00; G06F15/02; G06F15/76; G06F15/78; G06F3/00; G06F3/01; G06F3/02; G06F3/0227; G06F3/06; G06F9/00; G06F9/06; G06F9/44; G06F9/448; G06F9/4482; G06F9/4484; G11; G11C; G11C21/00; G06F2207/00; G06F2207/492; G06F2207/4924
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
163 words
AN ELECTRONIC COMPUTER COMPRISING: (A) A CYCLIC SERIAL MEMORY FOR STORING TWO MULTI-DIGIT BINARY-CODED DECIMAL NUMBERS, (B) MEANS EFFECTIVE DURING A FIRST MEMORY CYCLE FOR ADDING TOGETHER THE SUCCESSIVE PAIRS OF CORRESPONDING DIGITS OF SAID TWO NUMBERS TO OBTAIN SUCCESSIVE UNCORRECTED SUM DIGITS, (C) MEANS CONTROLLED BY SAID ADDING MEANS FOR INDICATING THE MAGNITUDE OF EACH ONE OF SAID UNCORRECTED SUM DIGITS, (D) MEANS FOR STORING SAID UNCORRECTED SUM DIGITS IN SAID MEMORY, (E) MEANS CONTROLLED BY SAID INDICATING MEANS FOR STORING IN SAID MEMORY, FOR EACH OF SAID UNCORRECTED SUM DIGIT, A MARK HAVING A VALUE DEPENDING ON WHETHER THE CORRESPONDING MAGNITUDE EXCEEDS NINE OR NOT, (F) MEANS EFFECTIVE DURING A SECOND MEMORY CYCLE FOR SEQUENTIALLY READING OUT OF SAID MEMORY SAID UNCORRECTED SUM DIGITS ALONG WITH THE RELEVANT MARKS. (G) AND MEANS RESPONSIVE TO SAID READING MEANS FOR ADDING TO EACH UNCORRECTED SUM DIGIT BEING READ OUT A FILLER DIGIT HAVING A VALUE DEPENDING ON THE VALUE OF THE RELEVANT MARK.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |