US2926850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binary adder subtracter
Assignee: International Business Machines Corp
•
Filing: 1955-01-03
•
Granted: 1960-03-01
•
Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 Richard K Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:36
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/50; G06F7/501; G06F7/5016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2442428A
Cited
US2536916A
Cited
US2609143A
Cited
US2692727A
Cited
US2803401A
Cited
FR1035312A
Cited
US2795378A
Cited
US2715997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |