US3015738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal translating device
Assignee: AT&T Inc
•
Filing: 1958-10-17
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Granted: 1962-01-02
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Expires: 1978-10-17
Abstract
No abstract record available.
Inventors
- 👤 Fred W Kammerer
- 👤 Richard P Riesz
- 👤 Jr Robert L Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:05
CPC Classifications
H; H03; H03K; H03K17/00; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/44; H01J31/00; H01J31/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2540490A
Cited
US2657309A
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US2740837A
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US2724771A
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US2600373A
Cited
US2862416A
Cited
US2914665A
Cited
US2860282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |