US2656462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable delay circuit
Assignee: Individual
•
Filing: 1945-10-11
•
Granted: 1953-10-20
•
Expires: 1965-10-11
Abstract
No abstract record available.
Inventors
- 👤 Frederick F Slack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:06
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2493517A
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US2355363A
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US2366307A
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US2428926A
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US2422204A
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US2422205A
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US2497165A
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US2411573A
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US2597353A
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US2526595A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |