US2880317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical impulse responsive network
Assignee: AT&T Inc
•
Filing: 1955-04-15
•
Granted: 1959-03-31
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Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Henry E Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:39
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H04; H04L; H04L25/00; H04L25/02; H04L25/20; H04L25/24; H04L25/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2086918A
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US2577827A
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US2536808A
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US2553284A
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US2709747A
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US2719228A
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US2723080A
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US2756329A
Cited
US2802940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |