Patent US2573316A successfully refreshed from Google Patents.
US2573316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutator
Assignee: International Business Machines Corp
•
Filing: 1941-05-23
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Granted: 1951-10-30
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Expires: 1961-05-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:11
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; H; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/042; H04Q; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2099065A
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US2154492A
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US2069521A
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US2136621A
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US2157690A
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US2158285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |