US2822131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impulse multiplying arrangements for electric computing machines
Assignee: International Standard Electric Corp
•
Filing: 1954-04-28
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Granted: 1958-02-04
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Expires: 1974-04-28
Abstract
No abstract record available.
Inventors
- 👤 Aigrain Pierre Raoul Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/52; G06F7/523; G06F7/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2410233A
Cited
US2635229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |