US2459798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal translator blocking circuit
Assignee: STC PLC
•
Filing: 1944-03-03
•
Granted: 1949-01-25
•
Expires: 1964-03-03
Abstract
No abstract record available.
Inventors
- 👤 Maxwell C Dettman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:39
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22; H03G3/26; H03K; H03K17/00; H03K17/51; H03K17/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2257562A
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US2172354A
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US2171536A
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US2265988A
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US2227050A
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US2266401A
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US2256336A
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US2240422A
Cited
US2253313A
Cited
US2315388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-25 | 1952-07-26 | 1953-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-25 | 1956-07-26 | 1957-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-25 | 1960-07-26 | 1961-01-25 | $7700.00 | Window Closed / Lapsed |