US2925218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instruction controlled shifting device
Assignee: International Business Machines Corp
•
Filing: 1954-11-15
•
Granted: 1960-02-16
•
Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Robinson Arthur Alexander
- 👤 Leech John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:03
CPC Classifications
G; G06; G06F; G06F5/00; G06F5/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB709410A
Cited
US2700502A
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US2755994A
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US2634052A
Cited
US2585630A
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US2719670A
Cited
US2666575A
Cited
GB709110A
Cited
US2800278A
Cited
US2767908A
Cited
FR1059408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |