US3202969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic calculator
Assignee: International Business Machines Corp
•
Filing: 1959-12-30
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Granted: 1965-08-24
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 Stephen W Dunwell
- 👤 Stephens Clarence Ernest
- 👤 William R Stringfellow
- 👤 Vaughn D Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:49
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; G06F9/38; G06F9/3867; G06F15/00; G06F15/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
A CALCULATOR COMPRISING A MEMORY FOR STORING DATA AND INSTRUCTION WORDS FOR USE BY SAID CALCUATOR, AN ARITHMETIC UNIT FOR RECEIVING DATA WORDS WITHDRAWN FROM SAID MEMORY AND PERFORMING ARITHMETIC OPERATIONS THEREON, A PLURALITY OF INSTRUCTION REGISTERS FOR STORING INSTRUCTION WORDS WITHDRAWN FROM SAID MEMORY, MEANS CONNECTING SAID REGISTERS IN SERIES, MEANS FOR WITHDRAWING SAID INSTRUCTION WORDS FROM SAID MEMORY AND STORING SAID INSTRUCTION WORDS IN SAID REGISTERS, MEANS TO DECODE SAID INSTRUCTION WORDS, MEANS RESPONSIVE TO SAID DECODING
References Cited (Backward Citations)
US2925588A
Cited
US2914248A
Cited
US3070304A
Cited
US3058658A
Cited
US3020525A
Cited
US3061192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |