US2604262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplying and dividing means
Assignee: International Business Machines Corp
•
Filing: 1949-01-19
•
Granted: 1952-07-22
•
Expires: 1969-01-19
Abstract
No abstract record available.
Inventors
- 👤 Byron E Phelps
- 👤 George E Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:45
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/498; G06F7/4983; G06F7/4985
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB616962A
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US2502360A
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US2521789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |