US2817477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic computer
Assignee: AT&T Inc
•
Filing: 1948-04-23
•
Granted: 1957-12-24
•
Expires: 1968-04-23
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:38
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/60; G06F7/607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1294507A
Cited
US1813830A
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US1933352A
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US2402989A
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US2293177A
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US2404739A
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GB542927A
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US2402988A
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US2401657A
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US2405096A
Cited
US2405664A
Cited
US2401621A
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US2404697A
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US2426279A
Cited
US2404047A
Cited
US2394924A
Cited
US2495075A
Cited
US2442428A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |