US2484081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical item comparing system
Assignee: International Business Machines Corp
•
Filing: 1943-04-17
•
Granted: 1949-10-11
•
Expires: 1963-04-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:52
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02; H; H03; H03K; H03K3/00; H03K3/78; H04; H04Q; H04Q1/00; H04Q1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1976617A
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US2106342A
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US2211942A
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US2254933A
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US2294734A
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US2302009A
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US2325941A
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US2320338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |