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US2905835A
Expired / Lapsed
US
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Transistor relay and signal shaping device
Assignee: AT&T Teletype Corp
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Filing: 1955-05-27
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Granted: 1959-09-22
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Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Phillip G Wray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:46
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/20; H04L25/24; H03; H03K; H03K5/00; H03K5/01; H03K5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2616048A
Cited
US2714702A
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US2622212A
Cited
US2655608A
Cited
US2641717A
Cited
US2795696A
Cited
US2703368A
Cited
US2705287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |