US2477585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse shape modifying circuit
Assignee: STC PLC
•
Filing: 1945-10-10
•
Granted: 1949-08-02
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Expires: 1965-10-10
Abstract
No abstract record available.
Inventors
- 👤 Sven H M Dodington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:19
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2138577A
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US2132655A
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US2251973A
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US2273193A
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US2438904A
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US2337522A
Cited
US2423304A
Cited
US2431324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |